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[cruzersmith]

Couldn’t find this in my searches and am a novice in all that can enter closed reef sys. A couple in DT but more in sump. It’s about a 1/4” in size if that helps. Is this a concern?

 

[Reefer Matt]

Looks like a Pineapple Sponge.

 

[cruzersmith]

Hey thanks! Is it safe to assume it’s ok then?

 

[EnterName]

Hey thanks! Is it safe to assume it’s ok then?

Pineapple sponges (presumably Sycon spp.) don't overgrow corals and are good filter feeders. You will probably see a lot of them pop up over time (my entire filter sump is full of them). They are harmless and also quite interesting as most sponges.