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My take on your situation is possible bad genetics. Invest a little bit more into an established breeder that sells you seeds in sealed breeder packs. Plants look fine. Just give them some time. Peace

Just watched the Video... ^^ had Autos going over 2m. So no, autos don't stay small by default Would be easier if a Coco dude helps you with the fertilizer, I am no big help and I would do more or less everything different as he did in the video Just the mini cup plant he had was just not how you handle Autos. The amount of CalMag he uses blew me a bit away.. thank good you can't really over feed those, the plant takes what it needs, the rest goes with the wash out if concentration is oversaturated. You need that much in Coco?? Anybody can help me out?

Hello all, I am a first time indoor grower and poster from Cape Town, and am three weeks into my first grow. The two oldest of my plants (Critical Auto) just hit 21 days of age and are starting to exhibit some light discoloration between the veins. According to my research this is an early sign of Magnesium deficiency? I would appreciate any opinion or advice. As this is my first grow, I am following along with a YouTube channel (SeedToStoned), as a basic guide on how to feed autos, as formulating my own mix amounts and schedule was a bit overwhelming. This is the guide I am following. The man uses gallon measurements, but I just converted them. Water is always pH balanced between 5.5 - 6.0 Week 1 - Just pH balanced water, plants were happy Week 2 - Terra Aquatica Cal Mag 2 ml/gallon, Terra Aquatica Micro 2ml/gallon, Terra Aquatica Bloom 4ml/gallon. Week 3 - Same as above, but 3:3:6 After more research today I realized I never buffered my medium with Cal Mag. None of the YouTube videos I watched or reading I did mentioned it apparently. I feel that this could be the issue? (Idk if mister YouTube man buffered his medium, but his plants are fine). I also didn't realize ppm/EC was a factor I was supposed to monitor? So I'm going to get a ppm/EC pen as well. For now, I just mixed 3ml Cal Mag into 3.75 litres of pH balanced water (no other nutes) and gave the two plants a heavy watering. I'm not sure if this is enough, or if I am stressing too much in the first place? Should I buffer my medium now with a water and Cal Mag soil drench, and do the same to the other seedlings? (15 days old) In your opinion, is it a bad idea to follow a YouTube feed guide, and should rather go by the measurements on the side of the nutrient bottles? More info below: Seeds Simba Seeds Critical Auto Fem x 2 (One misgermed, got a refund) Simba Seeds Amnesia Haze Auto Fem x 3 "Fruit Salad" seed from my friend x 1 (To replace the misgerm and cause why not) Gear Light: Green Houston 250W Quantum Board (Dimmable) x 2 Airflow: Standard RAM Inline Fan and RAM Outline Fan with Carbon Filter. (Will add oscillating fan once plants get bigger.) Pots: Garden HighPro Larger Propots - 20lt x 6 Medium: Freedom Farms Coco-Perlite Growing Medium 70/30 Environment Light Cycle: 24 Hours, at 30% strength Week 1-2, 40% strength start of week 3 (built up in slow increments) Temperature: 22-24°C Relative Humidity: 50-55% (Airflow is doing a decent job, I turn on a small dehumidifier if it gets too high).

As I mentioned in the original post, on the product detail page for the Terra Aquatica Calcium Magnesium Supplement it says "When growing in Coconut Coir, using prepared soil or soilless mixes, or expanding compressed coco, use 1 to 1.5 ml per liter to wet (to saturation) the media, and then add to nutrient solution at the same rate for the first two weeks. Continuous use may be helpful for fast growing annuals." I did not do this , and SeedToStoned didn't mention this either, and he didn't encounter any issues. I feel this is more likely the root cause of my older girls having this discoloration on the bigger fan leaves. All my other seedlings are still fine, as these two were at that age. I am considering preemptively increasing the Cal Mag in the feed of my other seedlings to address the issue before it starts. However, I don't want to overdo it if they are looking healthy now, and there is no guarantee these will encounter the same issue, as they are different strains. Will just monitor them all day by day, and see how the new leaves turn out. I didn't realize that old leaves will never return to normal if they discolor So thank you for that!

I wouldn't say you have an issue... the fish bone pattern you most likely diagnose Mg deficiency on... doesn't match with the green. Mg deficiency always also yellows out the leaves (bottom). New leaves look good... and after the last response.. no complains how you handle things. If you have the same readings the next day as the day before, you can skip the over night wait, you do all correct the first time. PH can fuck you over super quick... why, as a beginner, giving you a second read before you feed.. can prevent surprises. The moment I pH huge containers, 150L area, i always suggest and do a over night wait, just to be sure it fits, will feed a lot of plants. Autos are perfect for Eskom fuckups.. the more light the more potent, but they will finish with a good result. Lift the pot to be sure they need feeding. You can feel very easy if the pot is wet or dry.

As you gave em CalMag.. no way they have a Mag deficiency (if handled correctly). Plants look good.. and you always check the new growth.. the old fan leaves can discolor and will never change back to normal, damage stays. A bloom fertilizer in week 2 is a bit early.. but also not really damaging either. Same to the pots, 20L for autos is a bit big.. but works too, i prefer 10L pots. You run 24/7 light cycle because of load shedding or you run 24/7 with backup? That sentence bugs me: For now, I just mixed 3ml Cal Mag into 3.75 litres of pH balanced water (no other nutes) and gave the two plants a heavy watering. You pH the solution AFTER you put your fertilizers in... the solution you feed your plants need to be in the right pH range.. not the water you use. You over care... look that your plants get the needed wet/dry cycles and stick to the fertilizer manual. They need magnesium for the chlorophyll, but also not in huge amounts. A CalMag feeding a month should handle the need... if you run the wrong pH in the solution, the plants can't absorb the Mg.. and you will run into issues even if you feed em daily. I recommend to let the solution you mixed and put the pH in the right area to stand over night and do a second pH test before feeding. If the solution is still in the right range, you are good to go, if not, adjust it again. Is critical that the plants get the right pH or things go very fast very bad. Just google: Coco choir pH range for Cannabis You should end with a picture showing you all nutrients the plant needs and in what pH range it can get absorbed. I have Soil charts... not helping you or I would have posted.

Thank you for the response! To answer your questions, I run 24/7 due to load shedding, all in all it ends up more of a 18/6 cycle with all the times the power is off. I do pH test as the last step, after I do all my nutrients. Typo sorry . pH is always in the range of 5.5 - 6.0. For feeding, I usually feed every 3 or so days, which is how long it takes for the medium to become what I consider dry enough to water again. I will do what you suggested and leave the solution over night to see if the pH changes. Photo is how the biggest culprit is looking today.

Put in the net and gave the bottom branches a final trim. I should be good from here until full flower. Canopy is looking real good and level. One week since flip.

Got some bud pics of the organic harvest. Radical Juice - Ripper Seeds The colour speaks for itself. It looks dangerous, and slaps like a they/them. The smell is of grapefruit. Smoke is a bit harsh, a friend said it gets them right down the windpipe, but the aftertaste is great. Definitely has that bag appeal and I could imagine a grow club selling this at a premium because of the colour. It's also dense as fuck. Zombie Bride - Ripper Seeds This is a personal favourite. I have been trying for long now to find a good wedding cake cultivar. The smell is of icing. She's not much of a looker, but my god is she a smooth and sweet smoke. This is the weed I always wanted for myself. Now that I have it, I do not look forward to getting a tolerance for it. Slightly more dense than the Radical Juice.

ZxP harvest.