Oysters.

[dennis romano]

No, I couldn’t find any

Divers Den has had a few Spiny oysters for the last month. I got one that was covered in red sponge. So far, oyster and sponges are doing well in the NPS tank.

 

[burningmime]

Supposably, Pacific Oysters (you can get them alive from some grocery stores) work. There's a thread about them here: https://www.reef2reef.com/threads/clams-replacing-refugium-as-a-nutrient-export.776840/ (the title says "clams" but it moves to oysters quickly)