I never said my goldfish were on a warm water tank...and I got 2 tanks right now, I actually got 2 because I bought two Plecos who wouldn't get along, so for the second tank I bought a Gourami, but he's solely with the Pleco in there. For my 25 gallon right now (which is only temporary), I got 1 Black moor goldfish, 2 Fantails, 1 oranda, and an unidentifiable goldfish, my starter fish were the moor and the 2 fantails, and I know you're thinking it's the Black moor who's lost its eye...well, he may be the one most likely to do so, or at least it may seem, but to my surprise, it was one of the fantails, the female one I presume, I couldn't believe it...I got them and have kept them for more than a year now and i've seen nothing like this happen, heck, if the Black Moor's been perfectly fine all this time, it's your proof my tank doesn't have sharp stuff...so i'm puzzled, really, this other goldfish I call "unidentifiable", it's because idk what the heck it is, but it looks like a common goldfish, except he's all white, and has weird big black eyes, he seems to sometimes go crazy and chase goldfish around as if he was trying to mate with them I think...he's done that with all 3 goldfish except the oranda which was a new addition to the tank by my mother, but he wasn't doing that this whole week, so I doubt it was because of the white one, I really don't know...but i'm positive this happened sometime today, to the second girl above me, I can't give you water stats, because I haven't got any tools to measure, but I will assure I make constant water changes, so the infection problem should be under control..