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Discussion Starter · #1 · (Edited)
I posted in the general forum a day ago but didn't really get any help unfortunately. I figured maybe someone here would know more.

I've had this 55g moderately planted tank with 2WPG and DIY co2 for over a year now. Recently I started seeing these little white balls floating on the surface of the tank. They seem to clump together, all on the surface with nothing below it that I can see. Look at pic so you can see what I mean. The leaf near the stuff if below it and it is not growing on the leaf but floating around the tank.

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



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