Hello everybody? I've been trying to stabilize my SPS dominant reef. I set up a doser to maintain stable parameters since my tank was starting to use a lot of alkalinity and wanted to avoid alkalinity swings. It now stays at steady 8.2 - 8.5 dkh when I started dosing at night. I have a refugium that's on the opposite lighting schedule of the tank. Just did a ph test after the lights was off for a while. I'm getting 7.4 at night and 8.0 tops during the day. Wanted to minimize swings and maybe get in the 8.3 - 8.5 range. Thinking that it might be co2 I have started opening the windings more but hardly see any difference. Any suggestions?