willow,

with my experience with indoor hydro, i have always had yellow leaves on the bottom, but it has never messed with the buds, PH is more important than not adjusting it in line 6.8 - 7.0
mikee1422 Reviewed by mikee1422 on . more ph problems The tap water here is high and lately it has been extremely high and I don't know if it's because the city is treating the water with alot of chemicals because of the recent rains we have been having. Anyway I have to add sometimes more than a tablespoon of ph down. Is that much ph down bad for my plants? They do look pretty awful, yellow leaves, but the buds look great. This is only my second crop so I am pretty new to this. Thanks for your help. Rating: 5