Jardin Non-Return Plastic Air Pump 2-Piece Check Valves for Aquarium, Red/Clear

great value for the price, took a while to come in probably due to the holidays. Will definitely use again

I have a bubble wand and after I put one of the check valves on it, it started only pumping bubbles from out of half of the wand. It decreased the amount of air getting through my line dramatically.

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