Sorry to hear that Kuza
Turning up the temp. to around 84-86* is the best thing, BUT it doesn't stop the tomites that have already burrowed into the fish which cause the white cysts/spots (it does speed up the lifecycle) & there is no way to tell how many have done that - hopefully not too many! & no medication kills the tomite cysts, you have to wait until they fall off - which is when they start to reproduce & the high temps. stop this. Medications only work on the larvae.
At Lower temps. the lifecycle of Ick can be a week sometimes more, but at higher temps. it speeds up their cycle to 48 hrs or so. It is best to keep the temp. high for a couple of wks, just to make sure all the parasites are gone. The tomites die in 48 hrs if they can't find a host (fish).
There is a med. called "Rid Ich" BTW if using any type of meds. for
disease's in fish, remember to keep the tank light off, because most of these meds. are light sensitive & are made less effective if subjected to light.