You said you are growing NFT. I am unexperienced in this but I would guess that the angle of the tables is gonna determine the exposure time of the nutrient film with your roots. Are your angles the same on the tables?
How far are your lights from the canopy? aircooled?
google: heat treated BHO Edibles
a good thread that changed what I do with my claim. It works better than any cannabutter edible I have ever tried. Also Butane is GRAS "generally recognized as safe" by the FDA to be used in food extractions. Using bho that has hit a titanium or glass nail at...
Water is not a good medium unless you are using airstones or sprayers. Try putting your cuttings in soil and you can make a dome by putting a ziplock bag over the cup and poke 2 holes in it for ventilation.
I personally have seen the three fingered leaves show up from excessive topping and from revegging a plant that has been flowered. I would imagine any type of stress could cause it. Light leaks, aggressive training, stem pinching/piercing, fan blowing on it to hard without oscillating. Could be...
those 1 and 3 fingered leaves grow when the plant is stressed. It is morphing and it could just be because the clone came from a bad branch. Or possibly from a plant that was revegged after flower?
I got some DarkHeartNursery clones of Chernobyl from Harborside and I am very impressed. Definately a keeper. Lemon lime pheno + super sticky dankness that clones easy and grows rapidly.