I had someone with a 90 gallon tank with one overflow that was 1inch bulkhead for the drain and one for the return and I got them to purchase the rio hf 17 which needed to be throttled back a little because the overflow could not handle it at full run. great pump with low power usage.
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I was thinking around a 750gph. the one you listed is 1100gph. The model 1 sump I'm looking at says it's rated 550gph.
I have used a Rio pump before and was impressed with performance, price, and longevity. I may go that route again!
Thanks DIDYSIS!!!