demicent Posted November 6, 2020 Share Posted November 6, 2020 Is it all right to install the check valve just below the water line inside the tank? Link to comment Share on other sites More sharing options...
Ben Ellison Posted November 6, 2020 Share Posted November 6, 2020 I don't see how that could matter. 1 Link to comment Share on other sites More sharing options...
demicent Posted November 6, 2020 Author Share Posted November 6, 2020 Thanks, I didn't see how it could either, but I am frequently surprised! Link to comment Share on other sites More sharing options...
Dandy Pearl Posted November 7, 2020 Share Posted November 7, 2020 No this wont matter. Just be sure your tubing connections are good, you have the valve in the correct flow direction and you should be fine. Link to comment Share on other sites More sharing options...
demicent Posted January 7, 2021 Author Share Posted January 7, 2021 Just wanted to update this topic. In a recent newsletter article, Aquarium Coop says "The best practice is to place the check valve outside the aquarium (not in the water), close to the top of the fish tank. This position stops the water at the rim rather than near the air pump where the water pressure in the airline tubing could cause a leak. " 1 Link to comment Share on other sites More sharing options...
AdamTill Posted January 7, 2021 Share Posted January 7, 2021 You also don’t want it in the water since if it pops off you could start a syphon 1 Link to comment Share on other sites More sharing options...
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