Is this aiptasia or something else?

[itsBRENTyo]

Trying to get confirmation if this is aiptasia. Have a very heavy infestation, these are pretty much on all the rock and part of the back wall. Have already bought berghia nudibranchs leaning to buy a lot more , but is there a chance this may be something else? (Hydroids)

 

[IKD]

Look like colonial hydroids to me