Larger suction pipe to pump - better?
All inside tubes, inlets on the pump, and suction tube from fresh tank are 1/2". 3GPM pump, 40 PSI on the push side, self-priming up to 10ft (I think). Now, imagine fresh tank 6ft away, sitting on...
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In theory the larger pipe would have very very slightly less internal resistance to flowing water.
In practice it makes not one bit of difference given the low flow rate and fairly short distance you're dealing with. Reducing the suction head would likely have a greater benefit (if that is possible).
A larger filter may possibly be of some value in terms of frequency of servicing it and its tendency to choke off the flow of water. That's hard to say without investigating the specifics of your setup and water clarity and so forth. Even with that, I doubt I know enough myself to make any useful recommendations.
In practice it makes not one bit of difference given the low flow rate and fairly short distance you're dealing with. Reducing the suction head would likely have a greater benefit (if that is possible).
A larger filter may possibly be of some value in terms of frequency of servicing it and its tendency to choke off the flow of water. That's hard to say without investigating the specifics of your setup and water clarity and so forth. Even with that, I doubt I know enough myself to make any useful recommendations.
