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dannyboy10

Aquarium Advice Apprentice
Joined
Apr 18, 2014
Messages
14
ImageUploadedByAquarium Advice1401134198.618741.jpg this is on my brothers tanks and he wanted to know what they are because their is a lot and they get big?
 
Pineapple sponges, come and go. They don't get big and are a sign of a healthy tank
 
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