dankreef
New member
I have been baffled by this. I have my apex set at 6.68-.69 as the low and high. But I get a ph drop of 6.64 its always about .4 lower than I set it. Why is this happening? The tank is newer so my bubble rate is 1 per 3-4 seconds running at the 4lb size. I'm using arm extra coarse media in a big geo624 reactor the reactor is about 32' tall. Why would it be dropping lower than I am setting it is it because my bubble rate is slow? I have a fast drip coming out.
