JohnC
Member
Hi,
External filters are designed to be placed below the tank as most of them use gravity and a syphon effect to help move water around in some way. Unfortunately this new tank i'm helping update only has a spot for the external filter, it really needs refitting, next too and spanning the water line.
ie half below and half above the upper water line of the tank.
according to the owners the external on it has "worked for a day after the previous guy came then stopped working while becoming very noisy". I'm presuming that water has drained out of the filter once the intake has breached the surface and air has come back into the head stopping the suction, water in the filter draining back into the tank.....
Obviously this can lead to motor burn out in the long run and other problems, which is why they don't recommend externals being above the tank height...
Lacking space and working with the equipment they have what do you guys think of either -
With the external still where it is (bridging the top of the tank) refitting the outputs to a position lower down the water column so they would never risk exposure to the air? do the trick without too much risk?
Second plan, as there is an additional hydor pump in the tank, using that inline to push water into the intake or draw water through the outtake there by offsetting the lesser gravity effect of the filters position? and if so which would be a better position for the pump, forcing water into the intake or drawing it out of the outtake?
Opinions sought.
Thanks in advance,
John
External filters are designed to be placed below the tank as most of them use gravity and a syphon effect to help move water around in some way. Unfortunately this new tank i'm helping update only has a spot for the external filter, it really needs refitting, next too and spanning the water line.
ie half below and half above the upper water line of the tank.
according to the owners the external on it has "worked for a day after the previous guy came then stopped working while becoming very noisy". I'm presuming that water has drained out of the filter once the intake has breached the surface and air has come back into the head stopping the suction, water in the filter draining back into the tank.....
Obviously this can lead to motor burn out in the long run and other problems, which is why they don't recommend externals being above the tank height...
Lacking space and working with the equipment they have what do you guys think of either -
With the external still where it is (bridging the top of the tank) refitting the outputs to a position lower down the water column so they would never risk exposure to the air? do the trick without too much risk?
Second plan, as there is an additional hydor pump in the tank, using that inline to push water into the intake or draw water through the outtake there by offsetting the lesser gravity effect of the filters position? and if so which would be a better position for the pump, forcing water into the intake or drawing it out of the outtake?
Opinions sought.
Thanks in advance,
John