tisk tisk tisk! ha ha...you need to test that copper!
No for real, you sound like you gotta a plan that's working for you! I really would start testing the copper levels though.
I don't have to because I don't add any copper after. I just add the recommended amount and then after let the water evaporation just go and after a week top it off. Make sure salinity and pH are correct and then like I said the fish get rid of ich within a week you start seeing results. By two weeks it's gone and then the third week it's just making sure they don't have it. And then I'll keep them for 3 more weeks in there and copper levels are down obviously but like I said I don't add.