Originally Posted by Espectroundead
For how long did you use aquarium salt to treat ich?
One time I treated for 2 weeks and gradually raised the temp. by 2* each day to get it to 86*f, kept it at that temp. for 5 dys, then started lowering it again.
Another time, It took 3 weeks, but I only had the temp. at 82* due to the fish I had in that instance.
There was one time when I only used heat, having the temp. at 94*for 2 dys, this temp. should kill the parasite, but some fish may not be able to tolerate that high a temp. and you need lots of aeration due to the lack of oxygen. You need to increase aeration any time the temp. is raised though.
How long it takes really depends on the Ich parasite itself, there are many different strains and some are more resistant/persistant than others, it also depends on the severity of the case and how strong the fishs' immune system is in the first place to help deal with the parasite naturally.
Meds. do work too, but whichever way you choose, it is still very stressful to the fish.