Drip system w/ clay pellets, Trainwreck strain. About week 6 into the bloom cycle my PH is dropping almost a full point (ie. 6.1 to 5.1) each night and I have to correct (tested using to different PH meteres). Plants are healthy and blooms are big and full. Is this a normal situation? Using filtered water and Technaflora.
I'm not a hydro guy, but is there a big swing in reservoir temperature at night by chance? The only reason is ask is that ph measured at high or lower temps will give wonky results