The things we do for lush plants.

I messed up.

I put too much CO2 in my 220 without watching my water parameters. In another post I showed how to do CO2 at home. The problem is that I didn't watch my KH.

I lowered my Carbonated Hardness, stressing the hell out of my fish. Rainbows come from very hard waters with above 7 ph. I lowered my PH with the CO2 and the growing plants sucked all of the KH out of the water.

I lost 3 rainbow in the process. Oddly they were all female. I wonder why that is? Perhaps they were the ones getting chased around and were the most stress.

Learn it from me. Don't add CO2 with out watching your levels.