wierd puffball things

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pufferman

Aquarium Advice Freak
Joined
Jul 19, 2003
Messages
333
Location
San Jose California USA
Hey guys,
I was following what Hara was telling me to do about my cyano, while keeping the lights off. I switch them on today and i see these things that look like cottonballs with a sort of featherduster mouth to them. They look really wierd. Any suggestions at to what they are?
 
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