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Have not done my idea yet but I am considering it. Probably a lousy idea.
I am considering taking a large clear specimen container (the kind with a ridge to hang on the tank edge) sawing into the top in multiple vertical slots to mimic a manufactured overflow box on the other 3 sides.
Have a pump inside the overflow box connected to PVC pipe with U bend down to sump.
PVC pipe inside the diy hob overflow from pump down to sump.
Keeping plenty of clearance inside tank and sump for extra water,
If I lose power the tank should only drain down to the bottom of the vertical slots in the overflow and the overflow will empty down to the bottom of the pump and loose prime.
Once power is restored the return pump in the sump should send enough water to the tank and then the overflow box long before the overflow pump burns up.
Having the pump in the overflow box means I should never lose prime. (in theory) [emoji15]
Please let me know if I'm crazy.
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