I see many threads where people obsess over how all things related to pump GPM, lift, etc. Besides lift and basic pump capabilities such as head and flow, this also includes:
- Elbows (which reduce flow)
- Hose barb inside diameter
I have both a Chugger inline and a US Solar pump. both have to be throttled significantly using a valve on the output for recirculation and sparging, otherwise compaction would seem to be a problem.
I do understand how you want unobstructed input flow and some height above the input to avoid cavitation. (Not been a problem for me with proper pump location and orientation). And some using it for whirlpool have not been happy with the outut of a US Solar (3 GPM), getting fast enough for a good cone.
Am I missing something? Are there flow problems I don't yet know about? Especially for the March and Chugger pumps.