Over flow question
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Over flow question

This is a discussion on Over flow question within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; --> Hi all. I've been reading up on SW FOWLR and it sounds like something I'd like to try one of these days in the ...

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Old 01-24-2010, 03:27 PM   #1
 
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Over flow question

Hi all. I've been reading up on SW FOWLR and it sounds like something I'd like to try one of these days in the future. It may be awhile though. I was curious though. I've concluded from reading that about the only filtration needed is a protein skimmer and the live rock/live sand. So why does one need the over flow and sump? Is it to collect the water to feed to the sump? Is it to house charcoal?

Thanks for clarifying.
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Old 01-24-2010, 08:49 PM   #2
 
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A sump is generally used on aquariums over 55 gallons, because most of the efficient protein skimmer designs are best used with a sump. The sump allows you to skim organics from the surface of the water, which then fall into the sump, and are pumped into the skimmer. The sump also allows for the use of baffles to control the water level in different areas of the sump, which allows for a consistent height of the water inside the protein skimmer. This allows for a more consistent skimmer output.

In addition to filtration advantages, the sump has visual appeal. It allows a place for the skimmer, heater, carbon, UV Sterilizer, and even refugium to be placed out of view of the display. This also allows for easier access to this equipment, as opposed to having it all hang on the back of the tank. Additionally, the tank can be placed near flush to the wall.

If you were to choose an aquarium of 55 gallons or smaller, there are many efficient skimmers that are designed with an overflow box included, allowing for surface skimming of organics in a hang on model. For these size aquariums, I think this is the easiest option for most people.
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Old 01-24-2010, 10:10 PM   #3
 
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Thanks Pasfur. I see I made a typo in one of my questions. IS it to collect water to feed a skimmer is what it should read.
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Old 01-25-2010, 06:28 AM   #4
 
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Quote:
Originally Posted by Mean Harri View Post
Thanks Pasfur. I see I made a typo in one of my questions. IS it to collect water to feed a skimmer is what it should read.
A protein skimmer removes organic waste directly from the water column. Organics tend to bond at areas where air and water meet, such as the water surface. This is what forms the film that accumulates at the surface of saltwater systems without overflows.

If you use an overflow to a sump, or an overflow box, then the area within the water where the majority of organics tend to accumulate is being fed into the skimmer, making the skimmer more efficient in removing organics.
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