I'm kidding my whole tank is not covered in green, but I do have an algea problem. It's a very acute problem, but I want to be one step ahead. I have been placing my blinds downward; therfore, sunlight his been reaching the tank for the last few weeks. I have corrected that problem so no sunlight will make things worse. I have what they call "Green Algea Spots" on one side of my tank. I noticed it is starting to spread further in the last week. I need ideas from fellow hobbiest for a solution to get rid of the problem. Thanks.