Hey guys, Second DWC grow, but first time with Advanced Nutrients. I've been having some issues keeping the pH at an optimal 5.6 and have had to keep adding pH down every few hours. Overnight, the pH will rise from 5.6 to 7.5+. My setup and nutrients are as follows: 6 Gallon DWC with drip feeders 250w HPS 2'X2'X8' closet Res temp < 68 Room temp < 85 AN Sensi Grow A+B AN B-52 Hygrozyme I had a little spell with pythium and the hygrozyme has helped out quite a bit. During that time the pH dropped a lot. I'm in the 2nd week of veg now with the pythium under control. Is the pH rising a normal thing? I've read that it is, but I have also read that it should stabilize after a few days.