carbon to filter air before going to skimmer

To help what? I think people use carbon after the skimmer to keep the stink down.

Never heard of it before the skimmer.
 
Some people run carbon through the skimmer if you are drawing air in from outside (to raise PH). It removes any contaminants in the outside air.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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