Quote:
Originally posted by Dix Dogfight
Cathar
Have you tried both pumps in series? Just to see if there are any benefits from still higher pressure with the nozzled version. Im not shure on this but it should increase pressure/flow. Ask myv65 or any of the other pump experts.
cheers
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Hmmm, 12lpm is close to what the Eheim 1250 can do in wide open mode. I don't know that much about pump theory but it would seem to me that the Eheim 1250 would be adding very little extra pressure if it can barely keep up with the flow rate that the Pondmaster is pushing.
It may help as I pinch the nozzle more as BillA says and the flow rates start dropping below the 10lpm mark.
I'll try for a 4mm wide nozzle next.