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Apogee SQ-520 par meter for Radion xr15 g6 blue

kdogginz

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I have an Apogee SQ-520 par meter that I would like to sell/trade. I am looking for a xr15 g6 blue and will put cash on top.

The par meter has worked great for me. It is the usb version with a long cable, so you will be able to plug it in to a computer. I would keep it, but I decided to get a mq-510 instead since my computer is in another room now.

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When to mix up fish meal: When was the last time you tried a different brand of food for your reef?

  • I regularly change the food that I feed to the tank.

    Votes: 33 26.8%
  • I occasionally change the food that I feed to the tank.

    Votes: 40 32.5%
  • I rarely change the food that I feed to the tank.

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  • I never change the food that I feed to the tank.

    Votes: 9 7.3%
  • Other.

    Votes: 4 3.3%
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