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Old 02-28-2005, 01:11 PM   #1
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Join Date: Feb 2005
Location: Hanover Park, IL
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Flow rate...How low is too low??

I've worked out the formulas for flow rate through a 9W sterilizer and found that my sterilizer will be 99% effective with a flow rate of 45-55gph. That rate will turn my tank about 2.5 times a day. Is that sufficient?



55 reef tank
Fluval 304 Canister 260gph
Twister 3x UV sterilizer 9W bulb
Seaclone 100 skimmer
2 55W Actinic Compact Flouresent
2 55W Daylight 10000K Compact Flouresent
60# Argonite sand, 24# LR
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Old 02-28-2005, 01:20 PM   #2
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You want very slow flow through your UV and very fast flow through your tank. Your tank should turn 10-20 times AN HOUR, so turning your tank 2.5x a day, while it may be good for your UV will not support your tank properly. I have my uv on a loop out of and back into my wet/dry and then a return pump from my wet/dry to my main. HTH!

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flow, flow rate

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