ID help

[Sweetpea]

I have these green "worm" things growing on my LR. It started out as just one. Then a second one appeared, and last the third one showed up. The last one has grown much faster than the other two. They do not move and do not retract when touched. They aren't slimy, and they are kind of firm (I didn't touch them too hard for fear of damaging them). Any ideas?

[graphixx]

those look like cheato!!! it is awesome for nutrient export in your sumps. it is a good algae. they must have been hiding in the LR. do a search on cheatomorpha