Plants were thinned to one per pot and two weeks later the remaining plants just went crazy. Is a lighting system required for hydroponic gardening? How much energy does it take to grow lettuce? [10] 2 Transplant your seedlings to the reservoir. This means 5+ hours of sunlight hitting the plant leaves is recommended for growing lettuce and other leafy greens. My electric bill is lower and they will be slower to bolt and go to seed. Two pounds of fertilizer is enough to make 128 gallons of nutrient solution. All hydro lighting systems have four main parts: the bulb, reflector hood, remote ballast, and timer. To learn more, read our guide to hydroponic romaine lettuce. They include wheat, lettuce, potatoes, spinach, and turnips. The short-day cycle mimics natures environment for plants that flower in the spring. But generally, you can use half the manufacturers recommended feeding amount. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. They grow fast, produce well, and have a small footprint in your grow space. It only takes a minute to sign up. If you're growing lettuce in a sunny window, make sure to rotate the plants regularly so all sides receive equal exposure to the light. Indoor Vegetable Grower is a participant in the Amazon Services LLC Associates Program, Setting Your Hydroponic Lettuce Plants In Net Pots, Growing Hydroponic Lettuce Indoors Update, https://en.wikipedia.org/wiki/Kratky_method, How To Build A DIY Strawberry Tower Easy DIY Project, Indoor Coffee Plant Care Your Complete Coffee Care Guide, Growing Cantaloupe From Seed Indoors With Lights, DIY Sub-Irrigated Planter [Its Easy Peasy], Sub-Irrigated Planter Soil Mix [ A Complete SIP Soil Guide ], Sustainable Apartment Gardening [ How To Grow Sustainable Vegetables ], How To Grow Vegetables In A Closet For Beginners. Check Price at Amazon . I'm trying to figure out the costs involved with the electricity of the lights. When this happens, your lettuce plant will taste annoyingly bad. With some aeration, the air roots wont be damaged because they can breathe even if partially submerged. Some varieties like Butterhead and Romain are ready to harvest in just three or four weeks. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. We and our partners use cookies to Store and/or access information on a device. What is the point of Thrower's Bandolier? But I like to cut holes in the lid of my tote instead. She loves nothing more than spending time in her garden, tending to her plants and enjoying the outdoors. You might have to adjust the size of your grow light. Outdoors, the lettuce can be placed in a sunny spot in the garden or on a patio. Contact our team to learn more about how Eden Green farming partnerships can elevate your brand and add customer value to your store. Remote ballasts are much better for home systems. If you want a continuous harvest you should start more plants every few weeks. Thanks. Set the timer to control the frequency and duration of the water pump. If you wanted to grow tomatoes in this system you would need to grow them in a trash can. no need to take much care, anyone . For more immediate use, you might cut the whole head off just above the root, then dispose of the root system entirely. Water your seeds a few times per week. You can spend money for the grow bulbs but I would not bother at this point. What is the best nutrient for hydroponic lettuce? Here are our suggestions for the best types of lettuce for hydroponic growers: Butterhead lettuce offers a velvety texture and a buttery taste. Outside, a vegetable garden requires around eight hours of direct sun per day. How to Build a Hydroponic System For Lettuce? Does Counterspell prevent from any further spells being cast on a given turn? PAR is more accurate but for practical purpose lumens is useful if you know the spectrum of the light. This is because a hydroponic system is an extremely controlled and efficient environment for plants. There are a few ways lettuce can be contaminated when its grown in a hydroponic environment, but its still best to wash vegetables before consuming them. Make sure to put your container in a place that gets a good amount of sunlight. 650 to 700nm is Red and used for flowering and fruit ripping, yes? Ways to Use Compared to many options, romaine lettuce is one of the easiest plants to grow hydroponically. 2022 Eden Green Technology. It is possible to grow vegetables hydroponically both outdoors and indoors. An example of data being processed may be a unique identifier stored in a cookie. Hydroponic lettuce may taste bitter for four reasons: temperature, nutrition, water, and age. Neither is needed but I think there is an advantage to adding airstones. Heres how: Mason Jar Hydroponics Kratky Method Mason Jar Lettuce [ Easy ] (indoorvegetablegrower.com), Here is some more info on the Kratky method:https://en.wikipedia.org/wiki/Kratky_method, Indoor Vegetable Grower is a participant in the Amazon Services LLC Associates Program,an affiliate advertising program, Some popular choices include lettuce, tomatoes, and herbs. Here are some of the most popular and interesting lettuces to grow hydroponically: This variety has bright green, velvety, slightly ruffled leaves and a sweet butter-like flavor, hence the name. (not recommended), Starting Your Lettuce Plants From Transplants, Growing Hydroponic Lettuce Indoors In A Hybrid Hydroponic System. This blue light influences chlorophyll production, and only tiny quantities are required compared to red light. A nutrient solution is made by combining a balance of, A good hydroponic fertilizer for lettuce that is super easy to use is this. You can use perlite too or even gravel as long as it is clean but hydroton or growstones work best. It is the perfect choice if you are just starting out with hydroponics. - neydroydrec Dec 14, 2016 at 3:32 Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If you have the technical ability to rotate the system, you should do it. It is also more sustainable, using less water, no soil, and no chemical pesticides. Start your seeds in jiffy pellets or starter plugs. Lettuce is a fast grower. Hydroponic lettuce offers a variety of types and flavors, suitable for nearly any palette. In reality, getting to the bottom of a plants optimal light requirements is very technical. My current LED lights are 2:1 ratio of 3000K/5000K running dual meanwell 100 watt drivers with a real Watt draw at kill-a-watt of 209Watt, produce at 9.5 inches from canopy 295 ppfd @ 12 hrs a DLI of 12.7 and not that it has any cross correlation to plant because it refers to visible light 16300 lux meter/sq ( SI derived unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time ) and not all light plants use is visible, hence the difference in the unit of measurement to judge light for plants. The size of the grow light you need for two plants will depend on the plants specific needs. Harvest can be incredibly simple if youre not concerned about regrowing your lettuce from the same root system. We and our partners use cookies to Store and/or access information on a device. Read our. Just use a red:blue ratio of 5:2 and you'll find that works best. A head of lettuce will keep producing under these conditions for many weeks until it ultimately starts to bolt. . i wouldnt swap out my led for any t5 cfl or metal halide out there for power ppfd/watt light efficiency. It can be totally passive and doesnt need electricity to work. However, its possible for seeds to be contaminated and carry the contamination through the growth cycle and end up on the final productbut this is unlikely. About the 6400K (how it will often be listed) lights, they are also known as "day light" or "natural", but you can not trust these descriptions. To learn more, see our tips on writing great answers. Preparing a Vegetable Garden Site. You can just set up a simple Kratky lettuce grow or you can adopt some of my modifications if you want something a bit more complicated. It is a passive form of DWC, needing no airstones, pumps, or electricity. At the same time, lettuce needs plenty of potassium for structure and to prevent wilting. But if youve never grown hydroponic lettuce before, you should know a few things before you purchase lettuce seeds. Do new devs get fired if they can't solve a certain bug? You need to maintain at least 60-75% relative air humidity-a higher nighttime humidity benefits nutrient movement during the day. Use 1, 23W CFL (100W equalivant), 6500K bulb per plant. To supply the right balance of nutrients to your plants, you will need the right hydroponic fertilizer. I added the wicks to move water up to the pots as the water level drops. But I decided to hot rod it a bit by adding airstones. Incidentally using a CFL light is a great way to start seeds. Temperature Lettuce does well in cooler temperatures. Start small and experiment, you can add more if you like. Perennials require a stricter calculation for the lighting schedule to bring the plants through the vegetative (growth) and flowering (production) stages. Lettuce seedlings should get about 18 hours of sunlight or grow lights daily, followed by 6 hours of darkness. (Optional) Step 4: Add 1.5 grams of sodium benzoate, a preservative, to help your fertilizer last longer. My system started out as a standard Kratky method grow. University of New Hampshire Extension. It is also important to monitor the plants as they grow. Lettuce is a low-light plant and it won't do well in full sun. For most leafy greens use a red:blue ratio of 5:2, this will be sufficient to promote good growth. I planted a mixed pack of leaf lettuce so I have 3 or 4 different kinds. Lettuce requires mostly the high end of the blue spectrum of light, 650-700 nm, at an intensity of 17 mols/m2/day of PAR (Photosynthetically Active Radiation). Romaine lettuce. What are the main components of a lighting system? Too much more than that (150-200k) and you'll risk having too much which if I recall correctly can cause lettuce to flower (due to the heat concentration). WhyFarmIt.com is a participant in the Amazon Services LLC Associates Program. Exactly how many hours of light any plant needs depends on the lights you are using and how close the lights are to the plant. This is because nitrogen stimulates foliar growth or leaf growth. As an Amazon Associate I earn from qualifying purchases. The leaves shouldn't be too much warmer than the ambient air. If they are exposed to more than 12 hours of light per day, they will not flower. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Kratky lettuce needs a minimum of 6 hours of sunlight per day, but 8-10 hours is ideal. Allow for at least 14 to 16 hours of artificial light, followed by 10 to 12 hours of darkness every day for annuals. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Average Life Span & Key Care Tips. How many hours of light does hydroponic lettuce need? Grow greens, herbs, vegetables and fruit all year long Heading lettuce takes longer to finish but can be done in about 45 days. For most varieties, you can have fresh, healthy leaves ready to harvest within six to eight weeks. You should be able to start harvesting sooner with leaf lettuce. Hydroponic lettuce may taste different based on the nutrients you provide it, the temperature, and several other factors, but in general, For new growers, the easiest and most effective option is to get a, premade dry mix of nutrients specially designed for lettuce. Grow lights can be energy-intensive. Wide, frilly leaves and a loose head define Lollo lettuce. With food prices rising across the country, more people are interested in growing their own healthy groceries and fresh harvests at home. Acidity of alcohols and basicity of amines, Full text of the 'Sri Mahalakshmi Dhyanam & Stotram'. What are the different types of bulbs for the system? You can use starter plugs like Root Riots too. The type best for your setup will depend on your specific needs. . Lettuce is the perfect first plant for hydroponic newbies beginners. Because hydroponic lettuce isnt grown in soil and isnt sprayed with pesticides, it doesnt necessarily need to be washed. So it will keep growing and provide multiple harvests. Always be sure to find a Kelvin. Factors should include your system size and what type of plants you are growing. If you arent controlling the temperature that your lettuce is grown in, you need to work with the sun or accept the occasional bitter head of lettuce. This can cause your plants to become spindly and leggy. Each of these setups has something to offer. What Size Grow Light Do I Need For Two Plants? If growing indoors, artificial lighting will help faster growth. This will have the right balance of macro and micronutrients for lettuce and doesnt require any special knowledge of fertilizers. You will need to decide how many pots you want and trace them out. Generally, you need at least 30 watts of light per square foot of growing space. If a plant can get as much natural sunlight as possible, this is a huge bonus for its growing potential. If more than 15 kLx, leaves become purple, I think it`s not good. Possibly the most popular type of lettuce today is romaine. Some varieties can take longer to mature. It allows you to produce lettuce year-round, indoors or out. That's inaccurate. A great tip for beginners is to rotate the plants. Allow for at least 14 to 16 hours of artificial light, followed by 10 to 12 hours of darkness every day for annuals. This page might be helpful under the heading: How much light should plants receive? You should choose one thats most suited for your plants. I would recommend using House And Garden Aqua Flakes because it is easy to calibrate without a meter. Most lettuce varieties will regrow three to five times if harvested carefully. That is why I call it a hybrid but as long as it grows lettuce for me I dont care what it is called. With a sweet yet nutty flavor and a buttery, soft texture, oak leaf lettuce is always a favorite. Growing lettuce hydroponically is of great benefits and you can grow any variety of lettuce in your hydroponics system. BTW, if you are in a cold climate where the inside air in the winter is very dry you will get better results if you enclose your growing area as much as you can and do everything you can to keep the humidity up. It is not that accurate, but it will tell you if you are in the zone. Plugs are really better but use what you have. It is recommended to buy the ballast as a set with the bulb because they must match each other in wattage. Recommended Amount: The recommended amount of potassium needed to grow hydroponic lettuce ranges from 20 to 40 (for example, an NPK of 8-10- 38 ). Bibb and Boston lettuce are both types of Butterhead lettuce. They also get some window light. Lettuce is a minimally demanding plant when grown hydroponically. It is also easy to grow. Once your greenhouse is built, you'll need to add the plants. You can probably start harvesting leaf lettuce in 3 or 4 weeks. Lettuce Grow Review. Anything else lettuce might grow but it will be elongated and not form proper lettuce heads. Day-neutral plants: These are the most flexible. @BRM if you use 80 watt compact fluorescent light (CFL) you don't need a ballast just plug it in normal fitting. In this case, the solution is to turn down the thermostat or give your plants some space by changing the height of your grow lights. Lettuce is one of the most common hydroponic crops because its easy to grow and rapidly reaches maturity. Daily light integrals below 6.5 mol m 2 d 1 could greatly compromise growth and quality of pick-and-eat lettuce, potentially leading to an unsuccessful consumer experience. Today 2017, many of your indoor vertical farms are playing with the r:b ratio to affect taste, color and texture. Hydroponic strawberries need at least 8 - 12 hours of direct sunlight daily. Approximately 80-100k will be adequate. Masterblend Complete Combo Kit Fertilizer. Source: Rural Living Lettuce requires roughly 10-12 hours of light per day. "High humidity favors powdery mildew and Botrytis," he said. This is the most expensive element of the lighting system, so it must be kept off the ground to ensure that it never gets wet in case of a flood or leak. Here is some more info on the Kratky method: Windmill Palm Care: 9 Tips And Tricks For Beginners, Christmas Palm Indoors: 5 Easy Adonidia Merrillii Care Tips, Are Grow Tents Worth It For Vegetables? Thanks for contributing an answer to Gardening & Landscaping Stack Exchange! In general, lettuce should germinate in temperatures between 65 and 80F. . Depending on where your hydroponic lettuce comes from, you still may want to wash it. Others, like Iceberg and denser, sturdier lettuces, are ready to harvest in six to eight weeks. Most hydroponic lettuces do best at a pH between 5.5 and 6.0. Mix well. Its an incredibly versatile leaf with plenty of uses, and a hydroponic environment is a perfect setting to ward off contaminants. I am, however, keeping the lights on longer than others here with their brighter lights (only giving about five hours' darkness or less). You can determine the power of light using a PAR meter or the manufacturers recommendations. What Types of Plants Can Grow in a Hydroponic Garden? I didn't buy greens for months thanks to this high-tech growing system. When the temperature surpasses 75 degrees Fahrenheit, your lettuce plant will start to flower or bolt. You will see about 80-100k at around 6 inches from a T5. Here are some symptoms you may be seeing and their probable causes: Burned or wilted leaves: not enough calcium in your nutrient solution, Premature bolting: temperatures in the greenhouse are too warm, Limp leaves: too much or too little water, too much heat, too little light, or a fungal infection. It is essential to choose an energy-efficient light to save on electricity costs. For flowering/fruiting plants, I would actually recommend using more than one color temperature (like a 2500k one and a 5000-7000k one, if not more than two). If you use grow lights to grow hydroponic tomatoes, don't leave them on 24/7. A 40w tube light is definitely not enough either. Use the tubing to connect the water pump to the container of nutrient solution. Eunice is an enthusiastic gardener with a passion for growing beautiful flowers. The adequate light duration for lettuce is about 10 to 12 hours. Phosphorus: keep phosphorus levels between 15 and 20. The reflector hood is a reflective casing around the bulb. How Much Light Does Kratky Lettuce Need? This is a popular variety for baby leaf production. Potassium: potassium levels should be in a range from 20 to 40. To grow hydroponically, you need plants, a container, water, a way to anchor the plants, nutrients and a light source. It amazing how easy it is to start seeds (even temperamental varieties) with CFL light and a heating mat. How long does lettuce take to grow hydroponically? To be most effective, each light should be a specific distance from the plants: Fluorescent lights should be 3 to 12 inches above the tops of the plants; HID s, 24 to 60 inches; and LED s, 12 to 24 inches. This post contains affiliate links. The right measure would be lumens, or PAR and I tried with 2x 900 lumens and that wasn't enough either. During summer, lettuce does not grow that fast, but it does grow.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-medrectangle-4','ezslot_1',106,'0','0'])};__ez_fad_position('div-gpt-ad-growertoday_com-medrectangle-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-medrectangle-4','ezslot_2',106,'0','1'])};__ez_fad_position('div-gpt-ad-growertoday_com-medrectangle-4-0_1');.medrectangle-4-multi-106{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}, Lettuce does not require much light. How many hours of light does hydroponic lettuce need? If you want to have a bit of fun you can even add carbon dioxide. Store your hydroponic lettuce in a refrigerator, or set it on the kitchen counter with the roots in water. Hydroponic growers love lettuce because it grows so quickly. How Long Does it Take to Grow Lettuce in a Hydroponic System. Lettuce plants grown in hydroponics are fast and easy to maintain. Even with all the answers, there doesn't appear to be a mention of recommended lux/lumen for lettuce. You can also severely cut down on the amount of light (and electrcity) you need to use, by putting highly reflective material around the lights, so it bounces back on the plants. My hydroponic lettuce has really taken off. She is especially fond of growing roses and enjoys experimenting with different varieties and colors. For outdoor hydroponic systems, this is a concern. Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. Why is this sentence from The Great Gatsby grammatical? The most important thing about the lights is that you must get 6400 Kelvin (+/- 300) wavelength lights. Plants mostly require light in wavelengths of around 430,450,650,675 nano meters (depending on the crop), with highly varied intensity requirements from crop to crop. University of New Hampshire Extension, Optimizing Plant Growth with Indoor Lighting Q&A. Recently transplanted butterhead seedlings in our R&D vertical greenhouse. Read more about Hydroponic Nutrients & Fertilizers. I give my lettuce 10-12 hours of light from a LED grow light. You will need to gently wash away as much of the soil as you can. Use A Good Nutrient Solution. Lettuce is a great plant to grow indoors, as it doesn't require a lot of light. Learn More About Our Innovative Hydroponic Greenhouses. Each type has its benefits and drawbacks, so it is important to do your research and choose the one best suited for your needs. Not very practical indoors. This is simply because the lettuce may have been handled by someone with unclean hands. Manual timers use pins and have two plugs on either side so that you can attach two grow lights at once. Classic Romaine. How many hours of light does hydroponic lettuce need? I decided to add airstones to mine. cabbage, lettuce and spinach, but also for tomato, cucumber, eggplant, pepper, zucchini. Step 1: Pour one gallon of distilled or reverse osmosis water into a clean bucket. They are cheap and easy. Unlike metal halide and high pressure sodium lights you can position the light close to the plants without burning them. Bought 11 right away. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. In the summer heat, they undergo changes and start to bolt, creating a bitter flavor. I also use a computer fan in the grow area as air flow is important. Also you don't need a ballast just a standard screw fitting for the light. Lettuce growth depends on the interactions of blue and green light, but it is not clear how phosphor-converted broad spectra, with or without supplemental blue and red light, influence crop growth and quality. There isnt anything tricky or fancy about growing lettuce, and you can get started with almost no experience and very little money. While it would initially appear you want more blue light, that is not how photosynthesis works when you get down to the nuts and bolts. The high temperature will cause your lettuce plant to bolt or go into the flowering phase. This includes keeping the nutrient. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-banner-1','ezslot_9',140,'0','0'])};__ez_fad_position('div-gpt-ad-growertoday_com-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-banner-1','ezslot_10',140,'0','1'])};__ez_fad_position('div-gpt-ad-growertoday_com-banner-1-0_1');.banner-1-multi-140{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}Lets take a look at some other growing requirements: Below are the commonly grown types of hydroponic lettuces:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-box-4','ezslot_7',107,'0','0'])};__ez_fad_position('div-gpt-ad-growertoday_com-box-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'growertoday_com-box-4','ezslot_8',107,'0','1'])};__ez_fad_position('div-gpt-ad-growertoday_com-box-4-0_1');.box-4-multi-107{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. rev2023.3.3.43278. In a bottle combine yeast sugar and water make a hole in the cap, connect a pipe from the bottle to a glass of water make sure the pipe connected to the bottle is air tight. Although natural sunlight is the ideal lighting source for growing plants, artificial lighting for indoor systems can provide a good substitute within the appropriate color spectrum. Some people say 16-18 hours a day because that is how much light they get outdoors. You want a tight fitting lid. Not a lot of light? Lettuce, for example, prefers a range high in blue light. Check out TrueLeaf Market for 20+ varieties of lettuce seeds, Greenway Biotech 1 Pound Lettuce Fertilizer (8-15-36 ) Plus Trace Minerals, MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5lb Kit), When Does Primrose Die? They can be found in your local hardwa re store if you're lucky. A laser temperature gun can help determine if the intensity is resulting in too much heat. Temperatures that are even slightly lower than this will be helpful for the lettuce at night. Hydroponic lettuce can last two to four weeks if harvested with the roots intact. The amount of light varies depending on what type of plants you are growing. In general, most hydroponic leafy greens offer 11-13 harvests per year with the right greenhouse conditions. Theyre easy to grow, thrive in hydroponic conditions, are versatile in their use, and offer incredible nutritional bonuses. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Red and green varieties are frequent hydroponic favorites and quite attractive on a plate or sandwich. An example of data being processed may be a unique identifier stored in a cookie. I have had success with an 80 watt compact fluorescent light (CFL) within 5 cm of the plants, you can grow at least 6 plants. I'm guessing they grow toward blue light more than red. Blue Light Spectrum, the wavelength of light here, is between 400 and 500 nm. Smart Hydroponic Growing System for Indoor Garden,32",7L Hydroponic Garden Kit with LED Grow Light. Cost of electricity per day: $31.80 Commercial price and $38.52 per day for a private residence An average hydroponic farm profit margin of 12 basil and 12 lettuce during a 3.6-week harvest cycle is $10,482. The intensity of the grow light is important for ensuring that the plants receive enough light to grow properly. DLI is calculated by measuring the photosynthetic photon flux density, which is how much light within the wavelength that plants need. How much light do hydroponics strawberries need? Commercial growers across the world produce millions and millions of dollars of the stuff each year. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. What sort of strategies would a medieval military use against a fantasy giant? Lettuce will take about 21 days to grow its edible leaves and 45 to 85 days for its full head to be ready for harvest. Of these thousand varieties, several types are incredibly common because of their flavor, color, disease resistance, and growth speed. Hydroponics Basics: 16 Beginner Questions Answered, Hydroponic Nutrients and Fertilizers 101 (Which Is Best?). 1 Artificial lighting for a hydroponic garden should imitate direct and indirect sunlight requirements. amazon.com/dp/B0040B2S2S/?tag=stackoverfl08-20, We've added a "Necessary cookies only" option to the cookie consent popup. Its measured in units called micromoles (mols) for light wavelength that is usable by your plant. Manage Settings As soon as you start growing lettuce, you should use fluorescent grow lights to illuminate it. The information here is general and may not pertain to every variety of hydroponic lettuce. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. The net pots are not a full 3 inches so you want to use a 2 7/8 hole saw. As lettuce is literally all leaves, out of all of the essential nutrients your hydroponic lettuce needs, potassium is required in the largest amounts by far. How Much Light Does Hydroponic Lettuce Need? Lettuce does well in cooler temperatures.

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