Hey all so i went down a couple days ago to check my babies on some of them the lower leaves were turning a pale yellow colour and it has moved up a bit but is only 10-15% of the leaves and its just the fan leaves. this isnt happening to all my plants only some so thats why im worried. im using promix hp feeding them with terra flores 25% of what it suggests and superthrive. ph is around 6 and the buds are nice and crystally and dont seem to be effected..
Can't really say for sure, but sounds like they may be hungry. You may need to increase to 50%. Ur ph, is that ur run off?
As per the Zombie... is 6 the run-off ph? If it is, you'll be missing nutrient uptake of P, Ca and Mg... if promix is soil.