Flatworm ?

[Wd40]

So i have some flatworms in my 90 gallon tank right now.
Im setting up a new 150 galllon and wanted to move some rock over. Do the flatworms coexist in the rocks to or just the corals. I dont want to kill the rock b/c of all the coralline algea. But if i have to, I have to .
Thanx

 

[ReefWreak]

Depends on whether you mean planaria, which have nothing to do with corals, oe AEFW, which have everything to do only with corals.