Take the whole rock out and sell it to the LFS for credit. They're f**king weeds IMO. Same as yellow dandelions - errrrrrr I mean yellow polyps and pulsing xenia - all xenia actually.
In the ocean, they get eaten by fish and other animals. But in your reef tank, where you don't have any fish that eat corals - they grow outta control.
I'm not ripping on you, so don't be mad. But honestly, I don't know why people put these things in there tanks. You might as well introduce aiptasia or majanoes to your tank.
Research before you buy. Control growth by keeping nutrients in the tank low and for gawd sakes - don't feed them!! I bought yellow polyps when my tank was about 3 months old. Ohhhhhhh, so pretty......... so nice and bright yellow...... boy oh boy!! that'll brighten the tank up a lot. :bounce: Yay for me!!! :Cheers:
6 months later those 3 on that little rock turned into about 600. :grumble:
:frustrat: WTF?!?!?!?!?
I still have the damn things growing on my back glass. But I'm okay with them on the glass, because I can scrape them off with a razor knife in about 2 seconds. They aren't taking over my live rock and rooting out my other corals. I trade them to the LFS for credit. I've been doing that for almost a year now.
Here they are on my back glass: