When the root of the sprout grows through the Rapid Rooter or Jiffy Pellet, the little plant should be transplanted into the first container, where it will live out its seedling days. Ph is also coming out around 6.9-7.0. Before you use coco, it should be properly rinsed, buffered and mixed with perlite. You can do this at up to every other fertigation depending on need. I recommend beginning to fertigate (add fertilizer to the irrigation water) when two conditions are met: If the cotyledons are already open prior to transplanting into coco, then it is a good practice to presoak the coco in the seedling pot with nutrient solution at the appropriate pH and EC prior to adding the seedlings. The coco buffers 100-150ppm nutrient water just right. Plants can only perform photosynthesis when they have access to micro and macro nutrients. It is a great way to share your experience and ask questions along the way. In this tutorial, we walk you through everything you need to know and do to grow cannabis seedlings in coco coir. Seedlings and clones in coco should be strong enough to handle a light breeze at this stage. Fertigate twice: Full Strength Seedling Blend EC 1000, pH 6.1. Be sure to follow the growth and development of your plant to determine how to care for it. You must log in or register to reply here. During vegetative growth we recommend keeping RH 60-75% (See, “The Best Environment for Growing Cannabis”). During the seedling stage it is particularly important to provide nutrient solution that is the correct strength as measured by Electrical Conductivity (EC). We also have a live chat room, which is a great place to ask questions, get quick answers, and chat with fellow growers. That is 5ml of General Hydroponics Calimagic per gallon. I use 23-watt CFLs (100-watt equivalent) during the seedling stage and each seedling gets their own. We may receive a referral when you purchase products through our links. We recommend growing sprouts first in a Rapid Rooter or Jiffy Pellet before transferring to coco. Easy to follow instructions to produce great weed plants for novice growers and experts alike. You are responsible for knowing and following the local laws that pertain to cannabis cultivation, possession, and use. This means that a 15-25 watt fluorescent or LED propagation light is perfect for seedlings. Specifically, coco specific nutrient ranges are worthy of consideration. You can use various strategies to achieve the correct RH. I have just purchased a PPM meter and wanted to know what PPM I should be using? Calcium deficiency is the most common problem that you may encounter. Seed placed between wet paper towels in sealed container, Seed with tail transferred to Jiffy Pellet, Root Emerges, Jiffy Pellet transferred to seedling pot with pre-fertigated coco/perlite: Coco for Cannabis Seedling Blend: EC 400, pH 6.3, Fertigate twice: #1 EC 459, pH 6.23; #2 EC 464, pH 6.3, Fertigate twice: #1 EC 544, pH 6.1; #2 EC 612, pH 6.0, Fertigate twice: #1 EC 702, pH 6.2; #2 EC 772, pH 5.9, Plant has two nodes working on third. Roots Out from the bottom of seedling Bag! Coco is an inert medium, therefore, the plant only receives nutrients if we provide it with the irrigation water. This may seem like progress, but it produces a weak plant structure and slows overall growth. In most cases, they will be ready to be transplanted out of their seedling pots and into the next home. Coco should never be allowed to get very dry. At Coco for Cannabis, our mission is to help growers maximize the success of their cannabis crops by providing scientifically accurate information and sharing proven growing practices. I haven't been having good luck with feedling at the ml/L in peat, lots of nute burn issues, PH issues etc. As an Amazon Associate, we earn from qualifying purchases. You may need to either heat or cool your seedlings in order to achieve the correct temperature. Check out our Product and Equipment Guide for our Recommended Grow Lights, Grow Set-up Equipment, DIY Projects, Germination Supplies, Plant Training Supplies and everything else you will need during the grow! The seedling stage is one of the most sensitive periods of a plant’s life. The following two timelines are offered to give an understanding of a specific application of the principles outlined in this tutorial. The Science and Practice of Growing Cannabis. However, once the cotyledons open the plant will begin to fire up its ability to photosynthesize light energy. then slowly taper off. Vegged between 4-500, nothing burnt maybe a lil light! Seedlings are more sensitive than older plants and it is worth the effort to maintain their temperature in a narrower range. Because pH imbalance makes it difficult for the plant to absorb nutrients with its roots. This should not be a problem early on. I like to have the light-off period occur during the daytime rather than at night because this makes it easier to maintain a consistent climate. As the plants start maturing during the seedling stage, it is time to work your way through a transplant strategy. This allows you complete control of their RH as long as they fit in the dome and you use a hygrometer. This is because the coco is taking the Ca and Mg from the nutrient solution. And understand your medium, some like more of one thing than others (coco usually likes more calcium than other mediums), and if you're in something like ffof you'll just be supplemental feeding at extremely low ppms. According to growpotcheaply.com and his feed schedule, he is recommending : Days 1-7 .6ec -- 300PPM There are several key steps to follow to ensure that you mix solutions in the correct order and which have the correct Nutrient Element Ratio (NER), are the correct strength as measured by electrical conductivity (EC), and which have the correct pH. The seedling stage is a balance between the calcium needs of the coco and the low EC tolerance of the seedlings. The temperature that plants grow in has a large influence on the photosynthetic efficiency and respiration. Young seedlings have underdeveloped leaves that cannot yet process high levels of light energy. Thanks for the good informations. Plants at different stages of growth will need different levels of EC. However, buffering solutions themselves have a high EC, and seedlings could be burned if they are placed in coco fresh from the buffering process. If you do encounter problems with Ca or Mg deficiency during the seedling stage, we have suggestions for you below. During the seedling stage the relative humidity should remain high, 65 – 80% and the temperature should be moderate, 72-79f (22-26c). This practice helps to satisfy the coco’s craving for calcium, but it cheats the plant out of some other nutrients. Fertigate twice: #1 EC 987, pH 6.1; #2 EC 1050, pH 6.1, Fertgate twice: Full Strength Seedling Blend EC 1000, pH 6.4. Around 400. My tap water is PH 7.5 reading 199PPM. Plants do not get their energy from fertilizers, rather they get energy from the light and capture it through photosynthesis. We do not accept sponsorship or advertising and will not recommend any product that we would not buy for ourselves. Plant has three nodes. Keeping higher relative humidity reduces the stress on seedlings. Continue the foliar treatment until the seedlings are on the full-strength seedling blend. Clearly, cannabis plants enjoy increased parts per million as they grow. This makes the match simple. Whether a cannabis plant is planted in soil, coco, or hydro, pH levels need to be maintained to optimal levels. However, it is best to avoid the problems in the first place by properly preparing your coco. It’s a little intimidating. Until plants get bigger and start drinking more, you may want to give just a small amount of water at a time in a circle around the plant. The amount of water needed for each event is very small because the seedling pots are small, and you never allow them to get very dry. Im using coco mixed with perlite for my grow atm, they are in week 3 of flower, however i noticed that my runoff ppm is way lower than it should be. However, both hydroponic and soil pH levels should stay within the same optimal range of 5.5-6.0 pH. Transplanting out of seedling containers can be tricky whether you use fabric seedling bags or plastic solo cups. Transplant to second container: End seedling stage. I have some plants in coco coir and first they looked damn good in the seedlings/earlyveg/veg stage. Fertigate twice: #1 EC 851, pH 6.1; #2 EC 902, pH 6.1, Roots out from the bottom of seedling bag! As I explain in the article, “Why You Need Cal/Mag in Coco”, the coco itself has cation exchange sites that need to be filled with calcium or magnesium. For soil growers a pH of 6.0-6.5 is perfect. There is also TDS, and PPM, which can be used to measure the salt content of a solution. JavaScript is disabled. However, during the grow, more cation exchange sites are continuously exposed, which require additional CalMag. When seeds first sprout, they use energy that is stored in the seed for their initial growth and development. This is the main revenue stream that keeps Coco for Cannabis up and running! PPM in 10 Seconds PPM is a measurement of nutrients in the soil or growing medium. For a better experience, please enable JavaScript in your browser before proceeding. During mid flowering stage, cannabis plants like a PPM around 1000. However, if managed poorly, the plant can become stunted and never live up to its potential. Grow Your Own, But Don't Grow Alone... Let's Grow Together! But the most reliable methods, and most widely used, is EC. During the flower stage, optimum parts per million rises to 1000-1100. See the example timelines below. In coco, the best results come from small containers with frequent watering. The seedling stage runs until the plant has three true nodes (sets of serrated leaves). These peat-based media provide a more stable buffer for germinating seeds and sprouts. Before proceeding here, be sure to see my video and read our tutorial, “How to Mix Nutrient Solutions for Cannabis”. As a foliar application, the seedlings can handle a full-strength dose of CalMag. Stretch was over early this week & went up to 700 ppm this nute batch. I need to understand how this PPM thing works. A CA boast may be necessary, coco is notorious for being able to store (and not make available) large amounts of Calcium. It is especially difficult to deal with CalMag problems during the seedling stage. This flush is important because otherwise the residual high EC from the buffering process could burn your sensitive seedlings. The buffering process is crucial to prepare the coco for plants, and especially seedlings. PPM & EC. Once the cultivator reduces the photoperiod to induce flowering, the plants will do their best at 1000-1100 PPM. If you still have a dome or cup over your plants, they should be removed now, and a light breeze applied to the plants. I'm moving to Coco this week (got some beans germinating). Second fertigation is Seedling Blend EC 904, pH 6.3, Plant has two nodes. As I explain in our article, “Transplanting Cannabis Plants: Why, When & How”, there are significant benefits to starting plants in small containers. Be sure to see our article, “Why and How to Use CalMag in Coco”. In the end you just have to understand and read your plants to know if they want more or less. If you can buy filtered or RO try that. Very young seedlings or clones will appreciate receiving water with a PPM reading of 500-600 PPM. I found feeding lower PPM (in strain specific cases) that i was having more deficiencies . The fertilizers that we provide allow the plant to conduct photosynthesis efficiently, but they are not “food” that plants “eat” for energy. You are limited in the amount of CalMag that you can provide to seedlings because they cannot tolerate a solution with high Electrical Conductivity (EC). With soil cultivation, the water ppm should be checked after adding additives to the watering vessel. Substitute CalMag Water for first fertigation EC 794. As I explain in the articles “Growing Cannabis in Coco Coir with High Frequency Fertigation” and “Understanding EC, PPM & TDS for Growing Cannabis”, fertigation always requires a balance. Until the plant opens its leaves it is not capable of photosynthesis. I grow in coco so I can see how they react within a day or 2 normally. Be sure to see our tutorial, “How to Prepare and Buffer Coco Coir”. So i finally got a PPM/EC Meter. On the other hand, adding too much can prevent the plant from absorbing water. As the plant continues to grow during the vegetative phase of its life, it will benefit from water with a higher PPM reading of 800-900. Buffering with a strong dose of CalMag prior to using the coco allows you to provide relatively little CalMag during the seedling stage of the grow. Start with daily watering, however by the third or fourth day of fertigation, you can increase frequency to twice daily. They were growing way faster as in normal soil,i use coco fertilizers. Be sure to see our tutorial, “EC/PPM Targets for Fertigating Cannabis”. Buffering the coco allows you to satisfy the majority of the cation exchange sites. But most growers will rarely exceed 1.4, even for huge plants. Fertigate twice: #1 EC 608, pH 6.2; #2 EC 659, pH 6.2, Fertigate twice: #1 EC 750, pH 6.2; #2 EC 815, pH 6.2, Signs of calcium deficiency, begin CalMag Foliar applications twice daily. As we explain in our tutorial, "Germinating Cannabis Seeds - a Step-by-Step Guide", the seeds should be germinated in the dark to protect the young root from light. The humidity and temperature are very important during the early stages of growth with seedlings. For simplicity we will simply use “Soil” to stand for all three. Transplant to Second Container: End Seedling stage. The coco will take its share of the calcium and magnesium before the plant has a chance, so if you do not provide enough, the plant will suffer. It is often necessary to raise the RH during the seedling stage. 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