My tank runneth over (with algae)

[Bartman]

My tank is being slowly taken over by a red bubble-like algae that looks something like sea grapes (Botryocladia) but this looks a little different than the pics I see on the net. Can anyone identify this? Any ideas how to control it. If I take rocks out and scrub they are quickly covered with a lubricant-like slime which takes some doing to get off once the bubbles have burst.

The pictures are huge, I won't put them up here. TIA.

http://members.shaw.ca/scottndebi/Algae2.JPG

http://members.shaw.ca/scottndebi/_borders/Algae1.JPG