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ATC Refractometer with calibration fluid < 1 year old, sell $18

Michael Benz

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Used this less than a year. Excellent condition with an almost new bottle of calibration fluid. Sell for $18 shipped
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High pressure shells: Do you look for signs of stress in the invertebrates in your reef tank?

  • I regularly look for signs of invertebrate stress in my reef tank.

    Votes: 36 31.3%
  • I occasionally look for signs of invertebrate stress in my reef tank.

    Votes: 28 24.3%
  • I rarely look for signs of invertebrate stress in my reef tank.

    Votes: 21 18.3%
  • I never look for signs of invertebrate stress in my reef tank.

    Votes: 30 26.1%
  • Other.

    Votes: 0 0.0%
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