Srt8killer
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I was changing my filters in my canister and saw these white things. Dose anyone know what they are?
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Pineapple sponges 
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Srt8killer
Community Member
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Are they good or bad?Pineapple sponges
Crabs McJones
I'm so shi-nay
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They are great
They're filter feeders and a sign of a healthy thriving system You'll very commonly find them in overflows and high flow areas of the sump 
