Does anyone have suggestions on how to get rid of the green Algae. I only have a little on the back of the aquarium, but, nothing I have seems to eat it. I see they sell something called Algae Out (or something like that), was wondering if anyone has tried this? Or will it harm the fish? I do not have the aquariums in bright light, and only have the lights on (LED) in the evenings when I am home. Thanks for any info.