little green slugs?

[30 hex]

sorry, no pictures. I got some hitchikers on calurpa. They look like little mint green nudibranches. They mainly eat the roots only of the plants. There were 5 or 6 in a small bunch of plants. Any Ideas, are they safe,do they multiply out of controll? Please help.

 

[@knight]

hope you dont like calupera in your tank. i dont see how you would ever get rid of them though. if theres a bunch of them, its unlikely that you could rid your tank of them. kinda like bristleworms. one you got em, you always do.