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Old 03-07-2021, 07:34 PM   #1
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Open Loop Estuary Tank

Brand new to this and any forum. I kept saltwater tanks back the 1970s and 80s. I now live along an estuary of the upper Chesapeake Bay and am considering the concept of an open loop tank recirculating water from the estuary to the tank and back continuously through buried twisted tubing (as a heat exchanger) for the inlet/outlet. Then stocking with the large variety of fish, invertebrates, and plants I collect in the brackish water bay. Some challenges/ questions:
1. Is this even a good idea?
2. Rise (head) from the water level to my tank would be approximately 40' (30' if I have sump in basement).
3. Flow rate for water exchange assuming a 150 to 200 gallon tank?
4. Pump that can handle the head and flow?
5. Filtration requirements considering steady water exchange?
6. Ideas on aeration requirements/ approach?

I have found nothing about aquarium tanks recirculating water from a nearby body of water. I may simply be using the wrong search words. Any thoughts, experiences or links would be much appreciated. Thanks,
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tan, tank

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