Shaving Brush - do they serve any purpose?

[Armand9601]

Have one in my display tank that I recently moved up under the guise that pods were in it & would help seed the DT.

It's still there but I'm wondering if it actually benefits either the DT or refugium...

 

[Reefing Madness]

Yup, just like running macro algae. They help maintain water quality.

 

[Armand9601]

Great to know, it's a keeper