My 70 gallon community tank has 2 oscars, 2 bristlenoses, 4 siamese algae eaters, one silver shark, 1 big fat bad tempered tiget gourami (the boss!) and a few neon tetras. this morning I found white spots on the oscars and the shark, the rest of the fish are not showing any symptoms at all (yet). During the course of the day the number and visibility of spots has increased. The shark has been skittish all day, but the oscars are happy and feeding.
The oscars are about 2 inches long, I got them 2 weeks ago and they've been fine. They settled in and few enthusiastically from day one. Due to my trust in the source I didn't quarantine them.... I won't make that mistake again!
So I've hastily set up a 2-footer (11 gal) as a hospital tank. I'm using a handfull of media from the main tank's canister to seed it. I brought the temp up to match the display tank, checked pH (both tanks at 7.1), and transfered the oscars and shark to the hospital tank. Over the next few hours I raised the hospital tank's temp up to 30c/86f and dosed it with Tri-Sulfa tablet (sulfadiazine, sulfamerazine, sulfadimidine).
The display tank's remaining inhabitatnts aren't showing symptoms yet, but the problem I have is that the male bristlenose is 3 days into nursing a clutch of eggs..... this 2-footer was going to be the ultimate destinations of the fry so they wouldn't get eaten, and I'm about to set up a new 120 gallon display tank for the oscars, the 70gal was just temporary.
So, now I'm really worried about the bristlenose family. How safe is it to raise the tank's temp to 86f? (it's always kept at 78f) what about medication? will medication kill the eggs? and how about the plants? I have some really nice plants that's taken me ages to get established.... am I even on the right track? anything I've missed? (apart from stupidly not quarantining those oscars)