"gng" wrote in message
...
I have a Sequence 7200 and Aqua Ultima filter. The original guy who built
this used 1.5 inch, but when you do the math you actually get nearly twice
the water with 2" pipe. Been told the intake is the most important place
to
have the larger pipe. Sequence told me to use 3" if I could for even more
flow.
snip

I would agree. Never restrict the input to your pump.

BV.