Before or After?

I'm going to guess before...I'm not positive what I'm looking at but I figure there's a 50% chance I get it right.

Seriously though what are those, vermetids?
 
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I'm going to guess before...I'm not positive what I'm looking at but I figure there's a 50% chance I get it right.

Seriously though what are those, vermitids?
Going to guess after. So now one of us is right hah.

no idea what it is.
 
Yes it's aquarium... an algae scrubber. One of you is right. Not sure about the vermetid though; people usually think the strings are worms.

One last hint... if you clean with a brush then yes it's possible to get it that clean.
 

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