The siphon is in the tube with the GATE VALVE.
This is adjusted to keep water above it's top rim.
There is around a 6" difference in height between the 2 pipes with the emergency higher.
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250 gallon mixed reef, 2 Reefbreeder's Photon V 2, Deepwater BLDC 12, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.
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