I was just looking in the infirmary. I think you might right about P. I've given very little in the form of nutes. 1/8 strength at 21 days, 1/4 strength at 28 days and again at 30days. And I have a little under 1/2 strength mixed for my watering for day 36. I give calmag on all the waters in between. I started at 1/4 strength and worked my way up to full strength. I gave a full strength dose at day 32 and 34. Im wondering if im underfeeding. I think the first thing I'll do is check my soil ph. If it's on I'll assume theyre deficient in P? Or possibly N locking out P?I know theres some clawing on a few but I was leaning towards wind burn as its only on the ones that are getting the most fan.
Remember that calmag has N, so that may be a contributing factor if N is locking out Ca. There's also a possibility that you have too much Ca (which, if you've been giving calmag may very well be it), which would lock out P.

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If its gotten markedly worse since the full dose of calmag you gave Thursday I would put money on that being the issue. What is your medium? And what kind of water are you using/ppm of the water to start?
 
If its gotten markedly worse since the full dose of calmag you gave Thursday I would put money on that being the issue. What is your medium? And what kind of water are you using/ppm of the water to start?
Happy frog soil. R/O water 0 ppm to start. Tps OAC calmag. And advanced nutrients ph perfect base for nutes. Also I was looking up the calmag I use. It doesn't contain nitrogen.
 
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Week 5
Watered with plain water ph was 6.8 so I didnt mess with it. I'll water with plain water again in 36hrs. Then feed with advanced nutrients at 6ml per gal micro grow and bloom. 5 out of the 6 red poisons are turning dark purple. I love sweet seeds gear. 1 of the purple haze is getting huge. It's a week behind the rest and could fill a 3x3. Its definitely crowded. Going to do some defol over the next week. If it gets to bad I'll remove the weekest 2.
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Day 39
Watered with plain water 6.8 ph. Did some defol and some lollipopping on a few. Alot of lower branches weren't going to produce. I switched a few plants around so the taller girls are together under the growcraft(6 red poison, 2 purple punch, 1 amnesia express) and the shorter girls on the mars hydro side(2seedsman Ltd edition 420 purple haze, 2 amnesia express, 3 crystal candy xl, 2 purple punch)
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Week 6
Still getting some spots on alot of the plants. Just fed with 6ml per gal AN ph perfect trio. Was thinking about a worm tea for the next watering. Thought it might help balance soil ph and help use what nutes are in the soil. Looks like the Red poisons are going to be the first to finish. I love sweet seeds gear. Easy to grow, stable genetics. All the Red poisons are built the same, smell the same, and all are turning a beautiful purple. I have 2 amnesia express that are budding nice and one crystal candy XL.
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Day 44
Brewed a worm tea for 24hr( worm castings, mollasses, whiteshark myco) gave all a gallon. The red poison are oily and smell amazing. One of my grows this year will be 9 bloody skunk and 9 red poison. I've got a weak dose of AN mixed up for the next watering.
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Day 47
Worm tea seems to have fixed the soil ph. It tested at 5.5 before its at 6.5 now. Gave a gallon of plain distilled water each today. Run off is testing close to input. Crystal candys and amnesia express have some stink to them. Sour skunk. Strongest skunk smell ive gotten from an auto. Red poisons are looking good with a fruity sweet smell. Not real strong but nice. Did some defol and lollipopping again today. Only on the ones that are early flower. The ones farther along I only pulled fan leaves. Going to give plain water again then a balanced feed.
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