What are these

[Amstar]

These popped up in my tank. Duncan’s? They are in several different places throughout my tank

 

[Bucs20fan]

Can you give white light pictures? They look like duncans under blues, but Im thinking they are majano or ball anemones.

 

[Soren]

These popped up in my tank. Duncan’s? They are in several different places throughout my tank

Better pictures under white light would help, but I am guessing they are Majano anemones, considered a pest by most due to their high rate of proliferation.

 

[Amstar]

That’s exactly what they are. I’ve had this tank up for years, nothing added in the last 6 months. Man these seem like they are going to be a pain to get rid of

 

[Bucs20fan]

That’s exactly what they are. I’ve had this tank up for years, nothing added in the last 6 months. Man these seem like they are going to be a pain to get rid of

A syringe, and some kalkwasser powder mixed with tank water into a paste, inject it right on them specifically the mouth is going to be your best economical friend.