Depends on the pump. Each one should state the correct size for the maximum flow rate. I run 1" on my mag12, but I think the manual actually says to use something larger (1 1/4 I think)
Depends on the pump. Each one should state the correct size for the maximum flow rate. I run 1" on my mag12, but I think the manual actually says to use something larger (1 1/4 I think)