Question for Little Giant pump users

[Delphinus]

No screens on the bulkhead.

Hmmm. Conceivably, I could, with very little effort, switch to a 1.5" bulkhead on the sump, then go 1.5" pipe through the two 90 degree bends, and then step the pipe down to 1" just before the pump intake. I wouldn't have to rethink where I've placed my pump (which to me right now is the priority; which I am trying to work around).

How can a person tell if they are starving the pump input? Are there any signs a person can watch for? The flow this pump is putting out is substantial. I have no frame of reference to which I could compare.