your bucket should be lower then the sump...and the drip end should be higher then the pump end...then there is no way a siphon can occur..weight of the water on the pump side should be enough to siphon back into the 5 gallon pail..
not sure what else i can say...i am sure you already knew what i did say..
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Marine Aquarist Society of Barrie (MASB) Member, which is proudly supported by Aquariums Obsessed.
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