Sep 25, 2025 #1 C chrisg1654 New Member View Badges Joined Sep 17, 2025 Messages 3 Reaction score 1 Location elizabeth Rating - 0% 0 0 0 I have these things growing in my sump and some rocks in my tank. Should I be worried!?
Sep 25, 2025 #2 bluemon Lazy DIY Reefer View Badges R2R App User Joined Jun 20, 2017 Messages 2,622 Reaction score 2,513 Location California Rating - 0% 0 0 0 Can’t see clearly but probably pineapple sponges. Harmless
