I have a new tank and Innovative Marine 25 gal Lagoon set up for approximately a month and a half. This is my second tank my first one was in Fluval Evo 13.5, and I never had any problems with ph. But with this tank no matter what I do I can't raise the pH above 7.7 normally it rests around 7.65 with highs of 7.75. There's not much room to add a proper refugium, and I have considered the protein skimmer and CO2 absorption media route but most of my research has shown that it will only raise it by .1 approximately. I would do kalk, but since I have no Coral due to the lack of pH, Causing my alkalinity would go through the roof. I have been racking my brain with this problem for weeks now and have done countless hours of research with nothing truly promising so hopefully someone on here knows something I don't.