Originally posted by humuhumu
Looks like planaria (flat worms), I have seen a few tanks completely infested with these. They reproduce asexually and sexually, so they can multiply quickly. From what I have read most are non-parasitic and feed on algae, ditrius and small copepods.
The parasitic forms however feed on corals.
I'm guessing from the look of yours, it's a non-parasitic form and because of the color it probably feeds on diatoms.
Most forms are introduced into the aquarium on live rock or new corals, especially form Indonesia. Once the food source disappears, they will too.
The only thing that I would suggest is that you reduce the amount of lighting if your aquarium is strongly lit and if you have corals and they seem to be affected, try shaking them off in a seperate container of sea water and just brush off the rest.
LOL
Kewl, thanks. My tank is doing the best that it has ever been. I just dont want to mess it up. I am being parinod (sp) i guess. Not sure if i will leave them, or try to get rid of them yet...:thinking: