Thanks, but when I said I treated for ich already, I mean I went through all the hoops. I quarantined them ALL, added salt, bumped temps of BOTH tanks, used medicine, still they go back to flashing.
As for my dirt, they also do it in my other tanks, which is why I'm thinking the GH has something to do with it. Also my KH is barely stable at 70ppm-80ppm. However, I have been doing multiple tests and my tap and tank water is all at 0 for ammonia, nitrite, and nitrate (tank is at constant 10ppm nitrate though), and the ph is constant still at 7.6, so I'm not getting PH spikes.
so since the 6 months I had this tank, 3 of those months the fish were quarantined and treated properly. While the fish were "sick" the first time is when I dirted it with miracle grow organic. They were flashing previously to that.
Oh btw I have been doing the exact same steps you have already listed. I've been adding extra prime just in case because of it being spring and all with runoff.
I'm just unsure what to do at this point except try altering with equilibrium. Can I use any epsom salt?
Thanks for your help!