- Apr 8, 2019
- Reaction score
Ran it through a 100% vinegar bath which you'd think would clear any build up of anything. With no improvement.Probably a blockage inside the nipple of the Venturi. Pull the pump apart and stick a tooth pick or sheet rock screw into the nipple where the air line attaches to it. Calcium has a tendency to build up in there preventing proper air flow. I need to clear mine probably twice a year or I get that grinding sound as well.
Though what i did next was wrapped the barbs on the ceramic shaft with plumbers tape for a more snug fit in the motor block and reaction chamber... this seemed to improve it quite a bit - no rattling/grinding though it's still not dead silent which is still a pain! i'll take a look at the venturi nipple when i'm back under my tank - you never know.
Though if my impellet is shot (mainly the shaft and barbs) does anyone know where i can get a replacement impeller in Australia!?