If you have a good membrane diffuser and daily shut off the pump there shouldn't normally be any water leakage back from the diffuser into the hose. You can monitor this by just turning on the compressor and watching the air gauge (a good quality one). If the pump starts up and basically goes to normal running pressure then no water leakage occurred. However if the pump starts and builds pressure higher than the normal running psi then it is pumping water out of the airline. When the pressure returns to normal run psi, then air is being released from the diffuser. It takes about 1 sec per foot for new bubbles to reach the surface.
If you are using a GAST 0523, a two or three head 9" membrane diffuser will provide much more efficient use of the air produced and quicker, almost twice or almost 3X faster pond turnover. YOu will get more bang for your electrical dollar and savings will soon pay for the extra membrane diffuser. You could likely resort to two daily 4 hour aerations instead of the daily 12 hr run. Shorter pumps runs pay dividends not only in electricity but in fewer pump rebuilds over the life of the compressor motor.
Last edited by Bill Cody; 06/25/18 07:56 PM.
