I think I see what Wood is saying. The pressure in his tank is keeping his bubbler running all the time. As it lets pressure out of his bubbler holes in his fuser his pump then kicks in and at a certain pressure to fill tank back up to keep said bubbler running. So if I get this his pump / compressor comes on in a 24 hour period 48 times for 1 minute each time for a total of 48 minutes run time in a 24 hour period versus runnning a actually air pump 1,440 minutes in a 24 hour period.

At least I think thats what he is saying.... smile

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!