Black Slime Algae

[Mugster]

Can someone help me out here. My 180 gal has been up and running since before Christmas. My problem is lately I've been experiencing an outbreak of a black slime algae, mostly on my substrate and in areas of low flow/current. I've tried shortening the light period and cutting back on feeding but after cleaning it out it still reappears after a few days.

I syphon out the algae and sand it's attached to and thoroughly was the sand(fine crushed coral) before putting it back into the tank. Is there a way of getting rid of it altogether or is this something that has to be dealt with on an ongoing basis? [img]images/smiles/icon_confused.gif[/img]