For ph I'm not sure I got a couple gallons of water from tap and let them sit out for days without caps occasionally i'll spray straight tap but luke warm to get maybe some of the nutrients (if any) in fresh tap. I'm gonna work on both I have 2 different spots lit up right now one for seedlings 5 or 6 are germinating in plates and paper towel just started those a day or 2 ago. and i'll those veg until i sex this plant. i'm sure it's a male i see little ball/lumps just starting to form.