My
Alk is usually around 8-9 but after adding the Kent
PH Stuff it jumped to 12.6 so i stopped adding that. Ya i know all about the light cycle thing. I have my
fuge and one
frag tank come on at night when the others are off so the
PH stays pretty steady and doesn't drop much. I have the Aquacontroller so i check the
PH everytime i go in the fish room and it stays pretty steady at about 7.9 now. I just calibrated the probe and did a manual test to make sure the prob wasn't screwed up..