UV sterilizer for 500 gallons

[kendragon]

I think we are debating the same issue.
I get your point about exceeding the manufacturer's flow rate but their flow rate is based on having one unit. Massive flow over the first or second or third leaving it ineffective is a false statement. A reduced dose yes. Having multiple units in-line allows the pathogen to be hit multiple times. Analysis shows if you flow 4x the flow of the recommended but have 4x the unit (as T1 did) then you get the same dose + a little more.

Hate to say but length does matter. You guys said so yourself (UVC vs UVS). The short stubby bulbs are not as good as the long tube bulbs. Seriously, as I mentioned above being close to the quartz sleeve has the highest mW so longer the better. And yes quality (percent efficiency of the bulb) does play a role. Good bulbs have a efficiency of 33-35 percent.

 

[T1KARMANN]

Well, I am sure women have told you before but it ain't all about the length Lol.

My point is that if you flow 10 times the manufacturers rating then adding many units in a row does not solve the problem, the massive flow over the first leaves it ineffective.


Othink we are debating some different issues and will not get to the end of this.

thats crap dont take and notice of them girls who tell you its not important they are just telling you that to make you feel more comftibile about your size

i run 2 x 25w back to back for over 8 years with no leaks

i have now been running 4 x 25w back to back and still no leaks all i have done is change the tubes

i am now running a 10,000lph pump throw 4 x 25w uv with no problems the return flow is only about 5000lph so you do lose lots of flow so the contact time is fine so are the sills

 

[motoro77]

T1 you had trouble not so long ago with your stingrays and all wher acting strange? like Gill problems? this I mean that they infected one another you have it on your youtube channel when you are thinking why they managed to infect one another when you have a UVS.
or what was the problem? could you figure it out problem was?
I do not think we should have stronger flow you will have the UVS encourages flow.
I think you should count lph in not out

 

[HULON]

thats crap dont take and notice of them girls who tell you its not important they are just telling you that to make you feel more comftibile about your size

i run 2 x 25w back to back for over 8 years with no leaks

i have now been running 4 x 25w back to back and still no leaks all i have done is change the tubes

i am now running a 10,000lph pump throw 4 x 25w uv with no problems the return flow is only about 5000lph so you do lose lots of flow so the contact time is fine so are the sills

Ahh you guy's are just flat out wise guys you know darn there are larger UV's on the market very much Quality units the bottom line in in every walk of Life every where My uncle always drilled into my head CHEAP IS NOT GOOD!!!!!!AND GOOD ISN'T CHEAP!!!!!!!!! In my short 43 years of life i have found this Sooooooooooooooooooooooooo true so you guys go ahead Banter until your out of breath .My uncles statement to me when i was a Boy Has held true For me every time i Cheap out i pay Much Much More in the end

 

[Just Toby]

If you buy cheap, you often buy twice!

 

[T1KARMANN]

T1 you had trouble not so long ago with your stingrays and all wher acting strange? like Gill problems? this I mean that they infected one another you have it on your youtube channel when you are thinking why they managed to infect one another when you have a UVS.
or what was the problem? could you figure it out problem was?
I do not think we should have stronger flow you will have the UVS encourages flow.
I think you should count lph in not out

if you had read as much about my problem with gill worm as you say you would have found gill worm is something that hides in rays and comes out in times of stress after living in one tank all the p14 lives i think a move to a new tank was plenty to stress them dont you

as if you read as much about me as you say you would see it was only the p14 that were afected no other fish and that was well ove 15 months ago so for you to remember that i happy to see you read all of my theads and have learned something from them

 

[T1KARMANN]

Ahh you guy's are just flat out wise guys you know darn there are larger UV's on the market very much Quality units the bottom line in in every walk of Life every where My uncle always drilled into my head CHEAP IS NOT GOOD!!!!!!AND GOOD ISN'T CHEAP!!!!!!!!! In my short 43 years of life i have found this Sooooooooooooooooooooooooo true so you guys go ahead Banter until your out of breath .My uncles statement to me when i was a Boy Has held true For me every time i Cheap out i pay Much Much More in the end

your right thats why i have the expencive TMC vectros

your right you can get bigger but the normal large home tank uv is 55w in the uk i have 4 x 25w = 100w so whats better

 

[DavidW]

Instead of arguing in the dark why not look it up so you actually KNOW what you are talking about?
There are mathematical formulae to calculate exactly what dose, flow rate etc etc needed for any given tank or pathogen and UV should be correctly installed with a by-pass flow
I recommend "aquatic systems engineering" by escobal for the really detailed answers, but here are a few links that should help.



http://www.americanaquariumproducts.com/AquariumUVSterilization.html

http://www.uvcomparison.com/uvscience.php

http://definitive-aquarium.com/tools/uv_size_chart.html

 

[T1KARMANN]

each uv does tell you the correct flow rate i have even seen some jokers say that a uv doesnt need to be turned on 24/7 but as far as i know parasites dont sleep

nothing to a uv just work out the flow rate install change the tube at the right time job done its not a high tech bit of kit

a slower flow is always better

 

[DavidW]

Most UV manufacturers make exaggerated claims about their UV units, so they don;t really tell you the correct flow rate or what they expect to be treated at their rate of flow,which is derived from knowing your UV size , your specific tank size, pipe diameters and the pathogens you want to zap.
An 'on-off' cycle can be part of the equation for using a UV sterilizer for maximum efficiency. You actually DON'T have to have it on 24/7, 3 times per day with correct installations, long enough for the required # of turnover is sufficient , which also extends bulb life and reduces power costs, tho it is OK, and perhaps simpler to have it on 24/7 this can be less effective.
here's another link derived partly from the book I mentioned
http://www.aquariumadvice.com/articles/articles/44/1/Introduction-to-UV-sterilizers/Page1.html