I have a fairly new scrubber that was doing good at first. I started with LEDs and grew some brown algae and eventually started growing some green algae. Then I switched to compact flourecents and the algae progressed to the Easter basket grass. I have been cleaning it every two to three days but eventually the Easter basket gras type algae gave way to some golden brown algae. When I wash off the screen, the brown comes off as if it were slime or single cell algae. My sump has a lot of green slime algae but it doesn't grow on the screens. My Easter basket grass algae seems to be dying out and I haven't harvested any in several weeks (no real growth).