I read somewhere that if I raise my tank temperature to about 85-86 degrees F, it will kill off all the ich in the tank. Is this true? And if so, for how long do I have to keep it at the temp. to be successful?
Faramir - the required temp is about 90F (32C), but not many fsh will be able to get sufficient oxygen, especially with gill involvement with the parasite, to withstand that temp long enough to do the job.
BTW, that is from The Manual of Fish Health" by Chris Andrews et al, from tetra Press.