Blue Diamond Et40. Blue Diamond ET40 air pump pump Great Hi-blow replacement. Blue diamond et80 overview.
Outlet connection fits tight on a 12 ID. Buy 10 for 15040 each and save 6. Almost gone Free shipping.
When this happends you can replace the air pump or you can simply replace the diaphragms.
It is also effective in a pond. Outlet connection fits tight on a 12 ID. Blue Diamond ET40 Plus - Septic or Pond Linear Diaphragm Air Pump with Free Additional Air Filter. The Blue Diamond US ET 40A is the ideal pump for increasing the amount of oxygen in water.