Moloch;4495107; said:They don't look fuzzy. I've raised the temp on my heater, aiming for about 84* and I'm just going to see how it goes.
At this point, it won't do any good to remove the pleco right? The Ich is in the water, so if anyone else is going to get infected, they're going to get infected regardless of whether the pleco stays or goes?
Correct. To get that level of breakout on the Pleco the Ich has probably already gone through 1 lifecycle in the tank and reproduced. Taking the pleco out just spreads the ich to another tank and makes you treat 2 tanks instead of 1.
My rubber lip Plecos got hit hardest by my last ich outbreak as well. I rarely see them, but by the time I noticed it on the other fish the poor Plecos were completely looking like someone had dumped salt all over them (much like your pic). Your other fish may show signs over the next day or two.
As others said, 2-3 tsp of salt per gallon and temp around 84-86 for 10+ days will take care of it. Spots should mostly disappear within 4 days, but keep the treatment going for a few days after that to make sure you take care of any unhatched cysts.

Gotta admit I was being very bad about checking levels on the 20:\