I just use IO since I dose. I have been using it for a very long time, few years at least. I was using tropic pro but that was prior to dosing. I went a long time with doing minimal water changes. When the temp dropped I was burning through RODI so I thought maybe that had something to do with it, that test came back with no issues.
I think the main issue might be my nitrate I lost a few big fish that were keeping it close to the 2-3 range. Now looking at this I may need to bump up the fish count.
Anyone have experience adding phosphorous? I don't want to start adding a bunch of chemicals if I don't have too.