Nasty algae

[Jenndarlin]

I have ton's of that marine dinoflagelites (sp?). I scrub it off with a toothbrush or use a powerhead to blow it off the sand but is there a better long term control option??

[ClubReef]

I've never encountered this problem..but I fear this algae the most Here is a very good article on it: http://www.reefkeeping.com/issues/2006-11/rhf/index.php To summarize - raise your pH (using limewater aka kalkwasser solution) and make sure your phosphates are under control.