I have manually removed bucket loads of cyno, in prep for dosing potassium nitrate. I have done a 40l water change, and letting everything settle, Ill dose with Flourish Excel, and Flourish, and let that settle, and test all water parameters, and dose the Potassium Nitrate in a couple of hours. How long do you reckon it will take to see an decrease in cyno? I removed all the driftwood, and removed the cyno from the java fern roots, and syphoned as much as I could from the sp microfilia bases. On a side note, I also planted some more java fern on a second piece of driftwood, and added that to the tank. It's starting to look like a jungle, which is the look I want, I just need to get this cyno under control, its driving me nuts.