when my sump went offline for a few weeks i developed a wicked case of cyano, one treatment of chemi clean fixed it right up..

wish joes juice worked as well.

Chemi-clean works quite well but can bleach some corals if you don't do a large water change in the allotted time given in the directions and even then can take out a few species. Use with caution and be sure to scoop out what you can as it dies off and and can float around. I also scooped the worst infected sandbed areas out and washed seperately.

OT does someone have some chemi-clean?, i really don't want to go all the way to wai's.