I’m 5 days into growing and haven’t thought about ph once but I’ve seen it really does make a difference in the bud so I wanna change that. What ph should my plant be at right now and also in further stages should it change? Also water, ive been using purified bottle water, is that okay ? N lastly I’ve read in fox farm soil u don’t have to add nuts till around week 4-6 is this right ?