- Joined
- Dec 31, 2018
- Messages
- 146
- Reaction score
- 65
Isn't a refugium with the light on at night suppose to keep PH from dropping at night?A little skeptical myself. Have tried everything to raise PH. Started with a co2 scrubber, that worked fairly descent. Then I started recycling skimmer air into the scrubber to try and get better life from the media (didn't make much difference). Converted over to fresh air from outside, that sent me backwards. Now I'm scrubbing the fresh air but not seeing much difference. Algae scrubber doesn't seem to be producing much oxygen either. Right now I'm dropping down to 7.96 at night. So if PH is any measurement of fresh air, my apex isn't measuring any difference.