Strain: all fem photo Strawberry Cheesecake, O’haze Red, and Fruit Punch. O’haze is sativa. I tried it last grow, and something similar happened. This grow, the indica dom SC + the OR are showing symptoms. The fruit punch has very few funky leaves, if any.
Soil in pots is a blend of FFOF and a mix from a reputable local greenhouse; last grow I only used the local mix
Soil pH is 6.8, measured using an Apera phb3 pen which was calibrated 3 days ago. My water is well water, it has a pH of 8.5, and is very hard.
What is strength of nutrient mix? I do not have a tds meter. I’ve been feeding very little nutes since about day 28,when I noticed SC getting the claw. I’ve been feeding .5ml/l micro & .25ml/l b-52. I started foliar feeding with a .25ml/l solution of nirvana a week ago. In my last grow, I fed fairly heavily, using all 3 parts & supplements; I did not use nirvana. I feed once a week.
I am using a 600W GalaxyHydro led
Temps; Day, Night, we know it
Humidity: Day–44 Nighth-66
Ventilation system: yes. My light runs cool, so nothing fancy. I have an 8" fan pulling out from the top, I have 3 intake vents open on the bottom with a fan on the outside blowing in air on one side, I have an air mover in front of that intake blowing against the side & dispersing air throughout tent, and a clip fan blowing over the tops of the growth.
AC, Humidifier, De-humidifier,
I repotted from 1/2 gallon to 3 gallon two weeks ago; last grow the only plants I had issues with were in 3gal pots, while the 2gal pots were fine. Up until 2 days ago, there were no visible issues.
Well, hold on…I just put the air mover fan inside the tent on Fri. After 2 days, a few bottom leaves on the plants getting too much air started drooping & getting weird. I moved the fan so it didn’t directly blow on any of the plants; the 2 plants with the most leaf issues are now getting a lot of ricocheting air. I know that can’t be causing the problem, but could it be contributing?
Also, the Nirvana is a new variable, but I don’t think that’s the issue, unless it triggered my girls to grow too fast & eat up too many nutes? Since I didn’t use it last grow, I don’t think this is the issue.
I have an Amnesia Haze growing in a different tent. She’s a picky lady. She’s not showing any of these issues.
My last grow, I thought it was a zinc deficiency, so I put some zinc nails in the soil, per some advice, to try to remedy that. Didn’t work.
I haven’t been using much in the way of phosphorus, if you check my nutes. Could the pH be affecting uptake? Could I be underwatering, as well?
I want to learn what’s going on so that I can prevent it in the future. Can somebody please help me figure this out? I smoke waaay too much not to be able to legally grow my own. Black thumb be damned!
I live in a very rural area, so if I need to buy something, it’ll take at least a week to get to me via mail.
***While waiting to be able to post this reply, I watered each with a gallon of pH 6.0 water; runoff measured at pH 6.5. I don’t want to rush & just start doing things, but I thought this was an appropriate first step? With my luck, I just killed them. Lol.