What is the "junk"

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piperky1

Aquarium Advice Regular
Joined
Dec 31, 2012
Messages
66
So is this diatoms? (Probably not I know) or cyano? I had battled some cyano that was on sand bed surface and on rocks and beat it. I thought this was diatoms but its not going away. There is also green in there. Bright neon green. Tank is 8 months old.
 

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