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Unread 03/25/2011, 11:25 AM   #8
slief
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Join Date: Sep 2009
Posts: 14,173
You can use a UV 2 ways.. Water polishing and sterilization. Sterilization occurs at lower flow rates where polishing will also occur. Polishing without sterilization can occur at higher flow rates.

Most decent UV units have flow charts that will tell you what various flow rates through their unit will acomplish. Personally, if you have fish in your system, I think UV is very benificial. I can tell you from experience that they do make an immediate difference in water clarity even at higher flow rates that are less harmful to free floating organisms.

That said, I run one on my reef tank and am very happy with the results. If I didnt have fish, I might not use one but I dont know too many reeftanks that dont have fish in them.


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