av50

Has anyone had any issues with any AV series air pumps turning off because of overheating. My pump is less than a year old and turns off several times a day for about 25 minutes then turns back on. I called WON Brothers and they said it's the thermal protection switch kicking in to protect the...

After seeing Dave's setup with the AV-50 air pump, I am very impressed to the point I bought a AV-50 (buying still) cheaply. How does the closed loop system works? Should I make the system into a loop with drops of silicon tubing into the tank? Where can I buy some nickel plated valve with...