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Joined
19 Jul 2015
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Doha Qatar Middle East
Hi can some one please tell me what this white looking stuff is they are every where from skimmer to back glass.

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20151022_175313.jpg
 
The 2nd and 3rd pics look like pineapple sponges.
 
normally only in younger tanks. They are harmless and filter feeders. They disappear normally with older setups.
 
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