"Paul" wrote in message
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Thanks for the help, will go to 1-1/2" dia. tubing. I have a diverter vlv
in there too that splits it up to two filters....

For this size pump, 1.5" should be fine.

George

"George" wrote in message
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"Gordon" wrote in message
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I would not go less than 1.5" and preferably 2"
Cheers

Gordon

"George" wrote in message
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"Paul" wrote in message
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I have a 1200gph mag drive pump. My pond will be approx 1100gals, is
this enough pump? what size tubing i should use.

It should be enough. I would make the tubing at least one inch in
diameter to maximize the flow and reduce backpressure.

George

My recommendation was a minimum diameter.

George