R Richardmclendonjr New Member Supporting Messages 26 Reaction score 8 Location Atlanta Nov 17, 2025 #1 Any idea what these are? This is my return flow hence why it looks a bit dirty but I noticed it has these all over. Attachments IMG_4690.png 1.2 MB · Views: 14
Any idea what these are? This is my return flow hence why it looks a bit dirty but I noticed it has these all over.
NAS Trustee Staff member Supporting Messages 195 Reaction score 600 Location Milton/Woodstock Nov 18, 2025 #2 Pineapple sponge. They’re harmless filter feeders. I would leave them be.
R Richardmclendonjr New Member Supporting Messages 26 Reaction score 8 Location Atlanta Nov 18, 2025 #3 Awesome ty for the ID. As a biologist I love to learn new things
