Requesting help identifying a potential issue in refugium macro algae

[ultraArcite]

Hi everyone,

I have Sea Lettuce and Chaeto in my refugium (there are some other things in there if you wanna check out my build thread). I've started noticing these white, hair-like clumps in my sea lettuce. Can anyone identify this? Is it something I should be concerned about?

 

[ultraArcite]

I realized it might be hard to tell from the original picture, so I circled some of the larger clumps.

 

[AlgaeBarn]

It looks like a type of sponge

 

[ultraArcite]

It looks like a type of sponge

Thank you for the reply! Most sponges are good right? Should I be concerned? I QT'd everything but the algae, so I guess it came from my chaeto...

 

[AlgaeBarn]

Thank you for the reply! Most sponges are good right? Should I be concerned? I QT'd everything but the algae, so I guess it came from my chaeto...

It doesn't look like anything bad. Sponge is usually not a bad sign and it doesn't look like it is going to choke out your macroalgae just happily growing a long with it eating off the same nutrients. I would consider pulling it out anyway when you prune back the macro because I'm sure the sponge will still grow back.