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Old 01-28-2004, 07:17 PM   #11
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Nice Sun Tan - Love it - very funny gauge - made me chuckle.

Just wanted to add some info here on UV sterilization. UV radiation destroys a cell's ability to use its DNA. regardless of whether or not it is a single cell organism or multi-cellular. However, the fewer the cells the more effected an organism will be by exposure to the same level of UV rays. Here is a quote from About.com re. feeding while using a UV:

Quote:
Because it can destroy beneficial microscopic organisms that some reef tank inhabitants may depend on as a food source, UV light should not be run during feeding time.
So I just wanted to post caution, particularly if you employ a long dwell time giving a high kill rate for pathogens might also give a high kill rate to multi-cellular food sources.

Over all, IMO, UV's are excellent devices for all forms of aquariums.

Tom
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Old 01-28-2004, 08:17 PM   #12
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Hey! Thank you for the quick response. In regards to the overflow issue, I just wasn't sure if I should drop-in the canister intake tube into the overflow compartment or directly into the tank (i.e. completely by-passing the overflow chamber all together). If going directly into the tank, I'd have to seal-off the slots at the top of the overflow so absolutely no water got inside it & not use it at all. Only problem, I'm decreasing my tanks total volume by another couple of gallons with a dry overflow compartment.

In regards to the U.V. sterilizer, thanks for the tip. Could I run it from one of my canister tubes or does it HAVE to have a separate pump??? I think I've got a Magnum..?.. not sure of it's size, that was on the wet/dry. One last thing, I'm not sure I understand what everyone means by "...inches of head pressure" concerning the pump????

Thanks again!!
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Old 01-28-2004, 09:27 PM   #13
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Hi *22*

You can run a UV off your canister but beware of the recommended flow rate as I think Guage had mentioned earlier. This should be on the low side of the MFG's ratings in GPH.

Inches of head pressure, hmmm, never heard that before - usually its feet of head pressure. But Inches works as well just wanted you to becareful of units of measurement. Anyway this is a method of relating backpressure on a pump, either due to the work the pump has to do to lift the water or due to something resisting the flow of water like a canister filter.

Pumps are rated in max head pressure - this means that if you use the pump to pump water straight up (i.e. against gravity) it will pump it to that hieght before stopping. For example if a pump has 1000 GPH rating at 0' feet head pressure and 500 GPH at 10' and it's max is at 20 feet then if you pump water up an 18 foot pipe the pump will produce some small amount of water at the upper end of the pipe. If you use a 21 foot pipe the pump will stop running.

HTH

Tom
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Old 02-07-2004, 11:30 AM   #14
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Thanks for trying to help, I've gone back & forth trying to decide how I want to filter this system & from what I've read & heard the most it seems to be sump w/live rock/sand & now NO on the sterilizer.... I'm still waiting to see if someone will describe to me how I should convert my wet/dry. Maybe you can help??.. Do I just remove the balls & replace with the rock? Won't it "die" if not completely submerged in water? I've had salt tanks a loooong time but never used this type of filtration so I'm a rookie regarding the details of the set up. I also still don't know if I can/should remove my 20 year old crushed coral & replace with live sand & how to go about doing it. I've read about putting the CC in nylons & lay it ontop the sand to "seed" but still not sure.

Please help!
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