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Do the USB Nano air pumps need a check valve?


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1 hour ago, Emika_B said:

Kevinpleong - I’d add a check valve regardless of pump placement.  If the airline should get pulled off of the pump the valve will prevent possible siphoning out of the tank and all over your floor.

i didn't think about that event.  i guess that means its better to put the check valve closer to the airstone then the pump so it doesn't get pulled off after the check valve.

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