@Bronxyman,
Yeah, I try to fine tune my levels so I have the following results
PPM/EC drops
PH stable
Water level drops
I add plain water back almost daily to keep water level up, without adding nutrients back. As long as my results are the the list above, I continue doing that. Until I either change my res, which is 7-12 days
All of that can change vary with the nutrients you’re using.. for example, the jacks bloom is acidic and dropped frequently until I found the right PPM which helped stabilize it, a lot.
like