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WTB Hanna Alk/Phos Checkers

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Unfortunately, my phosphate checker deal fell through so I'm still in need of a model 774
 

Mastering the art of locking and unlocking water pathways: What type of valves do you have on your aquarium plumbing?

  • Ball valves.

    Votes: 58 50.0%
  • Gate valves.

    Votes: 64 55.2%
  • Check valves.

    Votes: 27 23.3%
  • None.

    Votes: 28 24.1%
  • Other.

    Votes: 9 7.8%
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