Aquarium Plastic DIY Bubble Counter


FDSC_1243

http://www.ebay.com/itm/281259038365
  • 100% brand new and high quality
  • Color: As the picture
  • Small and easy to use, it can accurately measure your Co2 flow rate.
  • Inlet has built-in check valve to prevent water flow backward
  • It should be used with the diffuser and check valve
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