So I just got a PH test kit, and it seems my PH was between 7.2-7.4. I have PH Down, and I was wondering how fast I could change the overall PH. Over a week from 7.2-6.4 seem reasonable? Does it matter? Should I wait longer?
Forgot to say: I am using a perlite/peat moss soil, the plant is 34 days old. I am using 8x27W CFLs on 18/6.
Me personally I would make the change as soon as I found out it was off. I am a hydroponic grower though.