You probably know this, but I've read that the bleach treatment kills
riccia, so don't try that, even if you're desperate!
Allison

"Tom" wrote in message
news:%owZc.354879$%_6.77209@attbi_s01...
What else can I use to eliminate the introduction of pests into my tank?
I
got in a bunch of Ricca and thought I had some potassium permanganate left
but I am out.

Will hydrogen peroxide work?

Any suggestions?

Tom