Rockwool is not only NOT a pH buffer, it actually screws up your pH if you don't pre-soak it.
Fans of that type are more efficient when they PULL air, not PUSH it. Set your EXHAUST to PULL air from HIGH in the room. LEave the intake passive and unobstructed.

I take it the dirt plants you show are being hand watered and when you go hydro, you will start with clones?
stinkyattic Reviewed by stinkyattic on . Help! Nutrient deficiency? yellow leaves! I'm thinking nutrient problem. They seem to go 3+ days without needing water and my humidity is normally 30-40deg maxing at 45 during the night. I switched to bloom nutrients from Technaflora and i've read that yellow leaves can likely be a nitrogen deficiency. I need help from the pro's, I'm just a newb! H=N C=N S=Y L=N R=N T=N Rating: 5