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Old 11-30-2005, 09:48 AM   #1
2003mikem
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What is the difference closed system to open system


What is the difference closed system to open system





I have a 155 bow front. Filters pro aquatics 150 wet dry, ehim 2226. 125 LR. 200 pounds Tufa rock. AKA calcium carbonate.



2 pecula’s clowns, yellow tang, brown tang, blow tang, and a bunch of leathers brain open brain plus a corcea clam. Plus misc. stuff



outer orbit 24 hour hqi pc light.





Please explain in as simple of terms as possible.





Also I made Geoff diy skimmer, very vary pleased with it.


1 power head in each upper corner. For flow ehim for flow. And pro wet dry for flow..
is this enough water movement
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Old 11-30-2005, 10:23 AM   #2
110galreef
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I had the same question about a week ago....

CLS= closed loop system... Basically you have a drain in the main display feeding a pump that return the water back to the main display via some sort of nozzle Here is a few pictures of someone CLS


Back side:






Open is like an over flow to sump and the pump back to the tank.

Many run just an open like me and many run both to support extra water flow requirements of SPS and certain corals.

Hope this is simple enough.
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Old 11-30-2005, 11:05 AM   #3
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strictly speaking a closed system is most typical aquariums, essentially self contained

an open system would be like a lot of Major aquariums use where sea water is pumped into and flows out of the system.
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Old 11-30-2005, 11:09 AM   #4
110galreef
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Is that what he was meaning.


$#@%$*&
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Old 11-30-2005, 11:13 AM   #5
Doug1
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Not sure, the question was vague, but I believe we have covered both definitions that apply to the hobby
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Old 11-30-2005, 11:27 AM   #6
2003mikem
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thank you for you replys.
also i am eather buying ecosystem or makeing my own sump. any sugestion?
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Old 11-30-2005, 11:42 AM   #7
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Quote:
Originally Posted by 2003mikem
any sugestion?
Go slow. Resaecrh everything. And ask questions. You're in the right place!
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Old 02-18-2006, 06:45 PM   #8
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Are closed-loop systems LITERALLY closed, or do they contain sumps, skimmers, etc?
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Old 02-18-2006, 08:05 PM   #9
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The CLS is a Closed system , Along with it but not part is a sump and skimmer or anythingthing else you want. The CLS draws water out of the tank and back into the tank for increase flow.
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Old 02-18-2006, 10:04 PM   #10
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shaywood....

Some one definitly using the search function.

Welcome as well! ....although you have been joined a while post count is down so welcome anyway!!
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Old 02-18-2006, 10:21 PM   #11
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closed vs open system can mean two different things to me. i terms of a filtration, sumps are open systems. there is an open top to the sump which water can overflow if it gets too full and spill on the floor. in other words, its open to the air. a closed system refering to pumps/filtration would be like a canister filter that has water go into and back out without any way for it to leak out. a closed loop is essentially the same thing, only typically only a pump and no filtration.

a skimmer must be used in an open system.

also, closed/open systems can refer to flow of nutrients. think of a tank and nutrients that are in it. the nutrients (like phosphate) have no way to leave once added. in this sense, tanks are considered closed systems becase there is no normal means of escape for the nutrients. some large aquaria are set up to use ocean water and a constant "water change" by continuously pumping in new and draining the old out to sea.
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