algae comes with the hobby..........snails, pleco's and cats only work alittle bit they can't always eat all the algae fast enough......you can put your light on timer to control the lite output, buy a lower watt bulb,keep your tank in a darkroom, treat the water with algaefix, and still the algae comes.................buy a tank cleaning sponge-grin and bear it- it's part of being an aquarist.