Hi all, I just had a run in w/ some high nitrates (about 15-20mg/l) due to a dead spot under my wet/dry filter. I'm in the process of slowly removing the bioballs and doing 20% wc daily. The corals (frogspawn, cloves, gsp, zoas & mushrooms of every color) are looking good now. One thing, I got a couple spots that started w/ red cyano- of course one spot is on the rock containing my Yellow Polyps (not sun polyps). These guys took the upset the worse and I lost several. The survivors looked OK a couple days ago, then the red cyano began growing on their stalks. I moved the rock to about 6" in front of and 2" below a powerhead in hopes of removing the cyano that way. Anybody have any suggestions or comments how I can improve removing the cyano w/out overstressing the yellow polyps?