I have a 15 gal tank with 11 fish and one ADF. It is in my office, in front of plate glass window. I know it probably gets too much light, but I do keep my blinds partially closed so it is not exposed to direct sunlight. I have a problem with algae. I can usually control any on the glass, that is minimum. What I can't seem to get on top of is the furry stuff that grows on plants, and the little "algae tumbleweeds" on the gravel. What can I do to help this? I use a 125 biowheel with carbon filter.