Guess what this is

Some sort of new crystalline filtration media, potentially resin or polymer based for extracting either copper or nitrate?
 
Ok the answer is the inside of a DROP scrubber showing bare Green Grabber rocks without growth, and the lights of course are on.

im not familiar with your scrubbers besides your surf line. I myself will be using a CW waterfall scrubber due to space constraints. But any working scrubber is a treasure
 

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HOW DO YOU COVER THE TOP OF YOUR REEF TANK?

  • Full mesh screen

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    Votes: 0 0.0%
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    Votes: 2 10.5%
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    Votes: 4 21.1%
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