Heat is the problem, sorry to break it to ya, you HAVE to deal with it, or consider moving your grow outdoors.
High temps exacerbate other problems, and yes, the pale patches are likely a secondary effect of the heat.
Chlorophyll starts to break down in the mid 90s. Enzymatic processes grind to a halt. No amount of food, water, or foliars will solve the problem if the plant lacks the enzymes to assimilate nutrients.
stinkyattic Reviewed by stinkyattic on . Pics: Leaf Problem! These are 7 NL clones that got off to a very bad start after an invasion of mites attacked them as babies. Mites seem to be gone and they're approaching healthy again after a nasty chemical battle, though still a little bare from removed necrotic, egg-infested leaves. The little runt in the middle, back row, was a goner, but she's come back for another go at life. Anyway, the pale blotches on the leaves? a couple of the gals are showing the same symptoms. Slightly curled looks like heat Rating: 5