I currently have a 20G long with only 1 fish, a adult jewel cichlid. There is tons of algae in the tank, and I hate having to clean out the whole tank every 6 months or less. A problem area that I might have is that I only change my filter pads every 2-3 months, however my filter is a emperor 400. There is only 1 watt per gallon, and not too much sunlight. What can/should I do to get rid and keep away all forms of algae? Ask any questions of information I might of left out and such.