If the new growth is growing bad. It is probably a nute deficency.
Or the ph. But the ph sounds ok. Maybe the low ph is locking out some nutes. You should be feeding them a veg nutrient that is high in NItrogen.
And try and get the ph up to 6.5-7.0 especially for veg.:thumbsup:
Jdog7000 Reviewed by Jdog7000 on . Couple questions.. Heres a few different pics from one of my plants... also some new growth is coming out dead.... and blackish... its about 12 days into flower any help is appriciated. Pic 4 is a different plant and the whole thing has like a powdery white residue all over it.. Any idea what it could be? pic 5 is a clone I had a thread about my clones with lower leaves turning yellow then dieing. My clones are in foxfarm ocean forest soil so I was thinking maybe its from the nutrients in the soil.. I Rating: 5