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closed loop system?

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Old 04-15-2007, 04:36 AM   #1
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closed loop system?

what do people mean by closed loop system?
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Old 04-15-2007, 06:15 PM   #2
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Re: closed loop system?

A closed loop system has plumbing designed to deliver water from and to the tank without going through a sump. For example, a drain pipe feeds a large pump under the aquarium. The pump then returns the water flow to several inlets located throughout the back of the tank. The system is entirely closed.
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125 Acrylic Tank 48x24x24
Approx 35 gal Sump/Refugium
Refugium has 24/7 light with 55watt PC
2x 400w MH 20k lights running 10hrs/day
2x 110w VHO Super Actinics running 12hrs/day
Calcium Reactor
Kalk drip with top-off
Closed loop Sequence Dart Pump 12hrs/day
Mag 7 Circulation pump 24/7
Kent salt
10 gal water change bi-weekly
Temp ranges: 78 - 85
Nitrate/Nitrite/Ammon: 0
PH: 8.1
P04: 0
Ca: 500
dkh: 12
Mag: 1320
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