Okay, I'll shoot for about 50 days just to leave a little cushion. I'll try and increase to 81f. Thanks for all your help @Jay Hemdal . My Blue tang and purple tang are completely covered in Ich at this point, so I'm glad I have been planning out eradication as a backup.The fallow period is not an exact science, but the minimum I like to see is 45 days at 81 f.
6 weeks at 80 would be less effective than that, so I wouldn’t advise it.
Jay
For me, management did not work at all once the disease took hold. It may work for others who have not yet experienced a breakout, but for people who may be considering employing management during a breaking,... don't. I feel bad for making my fish wait an extra two weeks for the right care and when they are clearly quite miserable. Metroplex, Poly Lab, Ich-X...They're all crap and had no effect.
I'll be sure to report back how Copper Power (30 days) + Prazipro (2 rounds) worked on my fish, including on my cleaner, melanurus, labout's fairy, & solon fairy wrasses.