Lowering PH?

I don't know if it's accurate, but it seemed to be consistent, which is all I was hoping for. It allowed me to see where the brighter spots are in my tank. Now that I have an apex, I'll be selling it
 

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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