How long does ick treatment last?

[kaz]

I have my temp in about 86 to 90 degrees how long to cure it?

 

[plecoperson]

You should keep it at 87-88 degrees, and for two weeks after the last spot is gone. Don't fergit to put an airstone in there and lower your water level to keep the oxygen level up in the tank!

 

[Zagz]

Ich can take between 2-4 weeks to cure. I've had and heard of others with ich that lasted over 7 weeks. That is rare though.

 

[DeFeKt]

I have my temp in about 86 to 90 degrees how long to cure it?

As suggested two weeks after the last spot has gone is a general rule.
keep in mind though that ich is present in your water ALL of the time.
if your temperature drops below a certain temp it will reappear, so i suggest keeping your temp up permanently. This is why i don't get ich