I am brand new to Fish Lore and have only had my aquarium since August. I have recently (2 weeks) lost all of my fish except one very harty albino corey(Boo). He is still doing fine although he was very nervous all by himself so I broke down and bought another albino corey(Casper) and they are doing fine. How long do I need to treat the aquarium for ich before I put more fish in. I have raised the temp to 80.