Okay, I think I may have ran into another problem after doing some more reading...
The overflow box I bought is rate for 600gph.
A QO 1200 is rated at 296gph at 0 head... 206gph with 3.5' of head...
I know an overflow will only suck as much water as is flowing into it, but won't the syphon break on it if the return pump can't keep up?
If that is the case, I'd bet that I'll need to restrict the amount of flow (to the sump) that the overflow box is giving me... would that work? or would that cause a flood on the outside part of the overflow box?
The other downside to that (i believe) is that it would cause more noise if the flow is restricted....
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