Can you explain a little more in depth? I don't really understand how you're suggesting to set this up.
Also... I still don't get what you recommend to do when the water eventually evaporates? Pull apart at the check valve??
Right now I have my regulator set up under the tank, the tubing comes up over the top of the tank and I had intended on putting the bubble counter on the outside of the aquarium glass where I have suction cups to hold it in place.
Are you suggesting just adding water above the check valve and that will blow back into the bubble counter?