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Discussion Starter · #1 ·
I've had this 55g moderately planted tank with 2WPG and DIY co2 for over a year now. Recently I started seeing this little white balls floating on the surface of the tank. :confused1: They seem to clump together, all on the surface with nothing below it that I can see.

Anyone have any idea what they are, and if they're harmful, how to get rid of them.


Thanks
 

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