Wow, i feel like a rookie again, over the past few weeks i have lost all (stilll have my pleco) of my fish to a simple case of petco ich. I started the treatment using an organic medicine called ich attack. After about three days, there was no sign of improvement. So i kept treating, and after the next two days, and a red-tail, there was still ich. So i took a trip down to the LFS, and they didnt have any coppersafe, so they gave me an old skool med called nox-ich, which is essentially just mechalite green. I am still treating with that, and it seems to be getting better, i am down to one fish, my pleco, and he still has spots. This has never happend to me before. This is about the longest ive ever had ich, and the most fish i lost. Any reasons why this happend? Did i do something wrong? How do i make sure it is gone? What steps do i have to take before i get more fish?