What is this scary guy growing in my aio?

[Jake_the_reefer]

I just took out my skimmer and sitting behind it was a bunch of plating sponges and this scary abomination what is it? Doesnt look like aiptasia. And I dont have any aiptasia anywhere in my display

 

[Arthacker87]

Glass nem or aptasia imo

 

[Jake_the_reefer]

And what's up with the sponges in the back? They are plating almost like a monti cap does

 

[sfairtx]

I too would guess Aptasia

 

[Requiemiero]

Plating sponges are a thing!

Purple Blue Plating Photosynthetic Sponge Soft Coral

Welcome to AquaCorals! The largest Tank Raised Soft Coral Aquaculture facility in the US! Over 100 Soft Coral species are grown on "Real Rock" here

www.aquacorals.com

There's nothing weird about them. They just plate naturally.

As for the other thing, it looks a lot like aiptasia. Maaaaaaaybe a majano anemone, but definitely a pest either way.

 

[Jake_the_reefer]

Plating sponges are a thing!

Purple Blue Plating Photosynthetic Sponge Soft Coral

Welcome to AquaCorals! The largest Tank Raised Soft Coral Aquaculture facility in the US! Over 100 Soft Coral species are grown on "Real Rock" here

www.aquacorals.com

There's nothing weird about them. They just plate naturally.

As for the other thing, it looks a lot like aiptasia. Maaaaaaaybe a majano anemone, but definitely a pest either way.

It's a solid white sponge. Super weird

 

[Sisterlimonpot]

majano anemone??