Byopsis?

[Ruth]

Boy I wish there was a magic bullet for that stuff. I have it in a couple of places in my 230g and seem to be keeping it in check with harvesting it very carefully. If I can I take the rock right out and scrub it with a toothbrush in a pail of salt water. It still comes back but is not spreading and in fact is gradually getting less.
I hate this stuff and it is very very difficult to get rid of.
Wish I could help but will follow along and see if anyone can offer additional advise.