Co2 and PH Help
I have a 46 gallon planted bowfront, and I haven't been seeing the growth I desire. Which is disappointing because of how much money I dropped on the lighting, plants, hardscape, and everything to make it look nice. I also notice that the drop checker is a constant blue, which means the co2 levels are too low for the plants, which you all know already (I'm incredibly new at this planted tank thing). So I tested my tap water and low and behold, the ph reads 8.0.
I'm aware that pumping co2 into the tank lowers the ph, but every time I do a water change, won't that bump the ph back up to where it was? And isn't that dangerous for my fish? How should I be doing my water changes? Is there anything I should read to be more knowledgeable about my situation? Thanks in advance.
Edit: I do have injected Co2.