Is This Aiptasia?

[Jwj]

Getting a bunch of these. Is it aiptasia?

 

[Jwj]

Better picture maybe.

 

[Isopod80]

Nope, not Aiptasia. Looks like a type of hydroid.

 

[Double monti 61]

I do not believe they are but they are very interesting.Sorry can not I’d them.

 

[Jwj]

Thanks isopod!

 

[Isopod80]

I'm not familiar with this variety but if they're spreading rapidly you'd be best to treat them like Aiptasia. Kalk paste is your friend. Hydroids can sting and annoy corals just like Aiptasia. Unlike Aiptasia, many hydroids will spread for awhile then die off on their own once the tank matures. It really depends on the spread whether they will become a temporary issue or not.