Robv1965
01-26-2004, 12:23 PM
Do you always use a checkvalve?
A new Rena 200 airpump that I've had running for 2 weeks suddenly stopped working. No vibration at all. When I tried to get it replaced, I was told it was broken because I didn't have a checkvalve and proceeded to give me a hard time. When I took the pump apart I appears to me to be bad windings on the coil.
When I disconnect the air hose from any pumps I have with airstones, the water slowly goes up the air line to about an inch below the waterline and stops there. What would ever make the water go above the the top of the tank and start a siphon?
I haven't used a checkvalve on any airstones in years. I felt that they were adding back pressure and would shorten the life of the diaphragm. Maybe they're need in deep tanks with ornaments that don't have any back pressure like the old clamshell or bubbly pirate ship.
What Gives?
A new Rena 200 airpump that I've had running for 2 weeks suddenly stopped working. No vibration at all. When I tried to get it replaced, I was told it was broken because I didn't have a checkvalve and proceeded to give me a hard time. When I took the pump apart I appears to me to be bad windings on the coil.
When I disconnect the air hose from any pumps I have with airstones, the water slowly goes up the air line to about an inch below the waterline and stops there. What would ever make the water go above the the top of the tank and start a siphon?
I haven't used a checkvalve on any airstones in years. I felt that they were adding back pressure and would shorten the life of the diaphragm. Maybe they're need in deep tanks with ornaments that don't have any back pressure like the old clamshell or bubbly pirate ship.
What Gives?