my bros kindergarten has a 10 gallon tank with 2 fot long goldfish in it (cant help that) and one of them has a huge gash taken out of its side, i cant stand by and watch this fish succum to an infection and then the onther 1 get it so how do i treat an open wound like that? if i had the money i would offer to take the fish and get them some slightly more schoolroom safe fish but i dont haave the money or the tankspace right now. some one help me save this fish!~