Is there anything I can do besides water change? I thought about adding a little peroxide in the water. It works great for plants and septic systems. I'm going to try a little this morning and probably more if you recommend it.
Update: I googled peroxide and fish and it looks like a lot of people recommend it for algae. I'm sure it will also increase the ratio of friendly oxygen loving bacteria to the anaerobic ones. It also looks like I can add quite a lot but for now I'm going to stick with just a little and see how it goes.
