robside
Active Member
Ive use a ph of 6.5 and its seemed that by the end of groww my ph run-off was way low. im phing at 6.8 7.0 is this to high. im starting to get yellow spots on lower leaves, not new growth, just on two plants and only on lower leaves, about two leaves per plant, (two) plants. should i lower my ph, and if so ow low should i go,.Grow Bible says you should always use a nutual 7.0 ph when watering.