What are these things?

[hockey nut]

Originally Posted by TNTCanada

I think I have some of the red ones how bad are they? I have a few around the base of one of my rocks. How do you get rid of them?

A sixline wrasse should take care of the flat worms if your tank is not at plague proportions.

If the wrasse doesn't work you could try "flat worm exit"

hth