[canadawest]

Ditto to Darren's suggestion.

Depending on your tank size, get yourself 2 or 3 Emerald (Mithrax) Crabs and watch the Valonia (Bubble Algae) dissapear. They LOVE it, it's like candy to them.

I had a pair of Emeralds in my tank early on, but they eventually dissapeared 6-8 months later. Never saw bubble algae during that time. Bubble algae then started to grow in several places so I picked up a couple more Emerald Crabs two weeks ago. Almost all of the bubble algae is gone now!

They are busy little nocturnal workers, you wont seem them much if at all during the day, but at night they'll be all over your tank picking at algae, especially Valonia.