kevinpleong Posted February 6, 2021 Share Posted February 6, 2021 I purchased 7 or 8 nano USB air pumps and they arrived today but was wondering if I need a check valve. They are hanging on the petco aqueon tanks. Link to comment Share on other sites More sharing options...
Andy's Fish Den Posted February 6, 2021 Share Posted February 6, 2021 If they are going to be hanging below the water level of the tank, then yes you want a check valve. Link to comment Share on other sites More sharing options...
Emika_B Posted February 6, 2021 Share Posted February 6, 2021 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. 3 Link to comment Share on other sites More sharing options...
CT_ Posted February 6, 2021 Share Posted February 6, 2021 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. 1 Link to comment Share on other sites More sharing options...
Maggie Posted February 6, 2021 Share Posted February 6, 2021 For a couple of bucks, they're worth it, IMHO. Even if you keep the air pump up high now, its one extra safety measure to avoid a possible catastrophe. Link to comment Share on other sites More sharing options...
Colu Posted February 6, 2021 Share Posted February 6, 2021 (edited) I have check valves on all my pumps just in case it better to be safe than sorry Edited February 6, 2021 by Colu Link to comment Share on other sites More sharing options...
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