uv sterilizers

Postby railinsp » 2006-11-07 21:35

I've had fish now for four years but were gold fish went ti trops in june. I have a rena xp3 cannister and also have a 9 watt uv sterilizers on my tank that also been since June.
before uv water was slight clouderness put my uv on my tank has bee crstel clear since also i had to brush my cannister tubes every three months. last time cleaned my tubes were in June.. Like to know people uv's what have there experince with has been
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Postby Dookie » 2006-11-12 18:47

Do the UV's help prevent algae too?
I have to say i've had my canister filter for almost a year now and i've never once cleaned the pipes. Is that bad?
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Postby railinsp » 2006-11-12 19:04

dookie I have cleaned my tubes and you be surprised whatcomes out of them. uv's will kill alage floating kind and bacteria that is floating in water.

bacteria like fungi on a fish no has to be treated But my tank seems heathier and wate cratal clear.

The only thing you have to replace the bulb once a year it loses its strengh
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Postby Dookie » 2006-11-12 19:19

I'll have to buy some pipe cleaners then. I've seen them before but although they were quite long ones they wouldn't be long enough to get right into the filter tubes. Do you pull them through with string or something? Every time I switch the filter off for cleaning it spits loads of bits out when I switch it back on. The fish seem to enjoy eating it though. lol
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Postby railinsp » 2006-11-12 22:16

dookie here is a link to where i got my brushes


<a href='http://www.drsfostersmith.com/product/NavResults.cfm?N=2004+113162' target='_blank'>http://www.drsfostersmith.com/product/NavR...m?N=2004+113162</a>

brush is hook to a flex wire and you can push it though tube if don't go all the way go at it in the other end then rinse with runng water
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Postby sharkdude » 2006-11-13 21:02

UV light is the part of the sun that gives sunburn as i kills all living cells.There are two kinds of UV: sterilizers that kill living bacteria in teh water, certain amounts of light kills different kinds bacteria, and UV clarifiers that kill the floating algae particles.
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Postby railinsp » 2006-11-13 23:46

this is what i was trying to say

this artical can be found on dr smith*foster web site



Q. Are UV sterilizers a good replacement for biological and mechanical filtration?

A. NO. UV sterilizers are not a replacement for good biological and mechanical filtration, regular water changes, or proper control of the nitrogen cycle.

Maximum Flow Rate to Control:
UV Bulb Bacteria
& Algae Parasites Max Gallons
8W 120 gph N/A < 75 gal
15W 230 gph 75 gph 75 gal
18W 300 gph 100 gph 100 gal
25W 475 gph 150 gph 150 gal
30W 525 gph 175 gph 175 gal
40W 940 gph 300 gph 300 gal
65W 1700 gph 570 gph 570 gal
80W 1885 goh 625 gph 625 gal
120W 3200 gph 900 gph 900 gal
130W 3400 gph 1140 gph 1140 gal
Though manufacturers' recommendations will vary, this chart provides a general idea of the wattage you'll need - and the proper flow rates to adjust your pump to ? when using a sterilizer for controlling bacteria/algae and for controlling parasites.

A properly selected UV sterilizer can help clarify water, rid free-floating algae, and control outbreaks of harmful bacteria and certain parasites.

UV sterilizers work on the principle that special fluorescent UV lamps can effectively irradiate (kill) microorganisms in aquarium water when they are exposed to this light. UV light, at a peak wavelength of approximately 254 nanometers, alters the genetic material in the organism's nucleus and shortens its normal life cycle. Theoretically, UV sterilizers can kill viruses, bacteria, algae, and protozoa with no residual effects. However, the organisms must be free-floating and travel through the UV sterilizer unit for the sterilizer to work. It has no effect on organisms attached to fish or rocks because they do not flow through the unit and cannot be exposed to the UV light.

Before selecting a UV sterilizer, consider your primary objective. Do you want to help control free-floating algae or do you want to control parasites? By deciding this, you will be able to select the proper unit to achieve your intended results. Though most manufacturers provide a recommended maximum aquarium size for each model they make, the application and the efficiency of a unit are also determined by flow rate, as well as bulb age and wattage.

Flow rate
Shortening or lengthening UV exposure time (dwell time) determines the effectiveness and use of a UV sterilizer. Adjusting the flow rate through the sterilizer controls UV exposure time. In general, larger organisms will need a longer dose of radiation than smaller organisms. For example, a UV sterilizer set at a higher flow rate is capable of controlling bacteria and free-floating algae but may not be effective against parasites. Reduce the flow rate through the UV sterilizer to lengthen the time parasites are exposed to the UV light. With a slower flow rate, the same unit can now be used to help control parasites.

Bulb age
Lamp effectiveness declines with time. Compared to when it was new, your UV sterilizer will no longer produce the same results after months of use. Therefore, you may have to increase the dwell time (by lowering flow rate) to produce desired results. Replace the UV bulbs every 6 months, or per manufacturer?s recommendation, in order to maintain UV efficiency. Also, clean the quartz sleeve of the lamp regularly to remove organic buildup. A clean quartz sleeve allows better penetration of UV light and maximizes the efficiency of the unit.
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Postby Mick e. t. » 2006-11-14 17:10

That last post of yours railinsp, brilliant.

Tip for cleaning long pipes with short pipe cleaning brushes.
  • Tie adequate length of string to both end of brush.</li>
  • Flush one piece of string (use your tap) down pipe until you have length enough to take hold of.</li>
  • Tie one end of string to tap, Ask friend to hold other piece of string or attach it somewhere convenient.</li>
  • Which ever way you do the latter it will give you both hands free to clean the full length of pipe.</li>
  • At the end of every stroke flush using tap, </li>
  • Continue working until pipe is clean.</li>
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Re: uv sterilizers

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