So I have been battling this stuff for awhile now. It took over a 10g and I finally got rid of it with the use of excel and limiting light and ferts. The thing is, I have it in my 3g and 20g and also have shrimp in both. I really don't want to use excel, since I killed my CRS in the 10g by accident. So I need ideas. How have you gotten rid of clado? I just want to hear peoples ways of how they get rid of clado. Thankfully this is the only algae I have a problem with.