I have had minor issues with PH being steadily low. 7.9 to 8.0. Since my house is on lock down for most of the year, I decided it was time to try a co2 scrubber on one of my tanks protein skimmers. While I was doing this, I had a few thoughts come to mind. Does excess CO2 also affect algae growth in the marine environment? From what I can pull out of study documents, the answer is yes. Just to what degree do we see this in the home aquarium? We all concentrate on food sources like Nitrate and Phosphate, but are we missing something here? Anyone have any personal experience with this? Thoughts?