Hi All, A local well known Canadian Fish store has been providing me with really poor quality fish. The options in Canada are much more limited than in the states so it often times means going without or getting weak fish. I started with a QT and lost several of my cories which I figure was due to an internal parasite. I also lost a male Platy due to an internal parasite. I bought some new cories to keep my school up as well as 2 more platies and I see already that the new platys have parasites again and I am now worried about the cories. I am medicating right away and I am trying to save my remaining cories from the first batch, but I am thinking that I will lose 2 more. What do people do?