Clone run...Nft hydro

Swelling nicely and still flushing with ph'd clean water...I've been keeping ph at around 5.8 and the plants seem to be holding there colour so hopefully using up all nutrients that are left in the plant . Reason for doing this is some of my smoke is still not burning right in a pure joint. I used to let ph go sky high for last 3 weeks but if i keep it in check for the next week and then clean water only for last week un ph'd too I don't want no ph down(acid) in the water!