need help id...bad anenome?

[Sinister]

it does seem to be spreading i have found them in a few spots, the tank about 5 yrs old but had to move it 3 times in the last 2 years thanks for the quick responses i will watch it for now

[hillegom]

hydroids for sure.
I still have some stubborn ones left on a rock too big to take out.. I took the other LR out and blasted them with a butane torch in the spots they were at.