Alright tyvm to everyone who helped out. The final decision is to plumb 2x 1" drains directly into my sump (one dedicated drain for the tank and a second as an emergency in case of a plug). Then I'll get the water pumping and all the new plumbing tested. Then I'll add a skimmer to the system.
Part of the urgency is that I have more LR to add to my system, which is going in the sump, and I have fish in QT that are about to start hyposalinity. So my tank has to sit fallow for 8 weeks but I need the LR in there first. I also want to add a few more crabs.
I'll post again when it's built. Might have to wait for the weekend.
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