I had a search for permanganate on RC, didn't find anything appart from this:
I know from chemistry that its pretty nuts stuff - if it were an easy fix to algae I'm sure there would be a thread on RC.
It does seem to be used in freshie tanks, but since everyone here is very careful about correct levals of Calcium, Phospherous ect, adding manganeese ions might screw something up?
this is for a pond, which can obviously handle harsher treatment than a reef tank. After adding you are supposed to do a 50% water change.
The more I read it sounds like its a no-go.
Apparantly it will kill all your bacterial population too, so dont put it in!!!
well, at least until one of "those in the know" says it ok. 8)
btw : Had a fun experience with this stuff - on Blossom Parade day in Hastings my friends and I (unofficially) made the huge fountain in the town centre go a lovely pink colour , it was quite a hit with the crowd. :lol: