Is this Blue Hypnea?

[Kmst80]

Have this growing on the overflow, I wonder if it is blue hypnea and I toss it in the fuge?

 

[sixty_reefer]

It’s dictoya can become invasive in a coral system

 

[WheatToast]

It’s dictoya can become invasive in a coral system

+1 You beat it to me!

Looks like the brown macroalgae Dictyota, which can give off a blue iridescence. It is generally seen as a pest macroalgae outside of dedicated macroalgae tanks and can clog pumps. It really is a shame since it looks so beautiful, in my opinion :(.
https://www.reefcleaners.org/nuisance-algae-id-guide

Dictyota dichotoma:

 

[Kmst80]

Thanks for getting me on the right path here. I'll take it very carefully out so to prevent it from spreading, so far it's only on the overflow.

 

[sixty_reefer]

+1 You beat it to me!

Looks like the brown macroalgae Dictyota, which can give off a blue iridescence. It is generally seen as a pest macroalgae outside of dedicated macroalgae tanks and can clog pumps. It really is a shame since it looks so beautiful, in my opinion :(.
https://www.reefcleaners.org/nuisance-algae-id-guide

Dictyota dichotoma:

It is beautiful, I had the red version in my previous planted tank and it just looked awesome the red variety it’s also known as Red Devil