UV sterilizer for 500 gallons

  • We are currently upgrading MFK. thanks! -neo
Tell me what flow rate pump you are running and what pest you are trying to control. I will run the program for you. However, I will do it for the chamber I have the dimensions for. Unless you can supply one.
 
kendragon said:
Here's a plot of a four bulb UV. Kill rate is best close to the quartz sleeve. Multi bulb designs allow other bulbs to kill when the pest is too far from the other. Bulbs are spaced so that in between the four bulbs intensity is still good for the kill. That goes the same for the chamber wall. It keeps the pest close enough to the UV ray.
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IMG_9363.JPG

IMG_9363.JPG
 
I do not think you will find a uv big enough for a 500 gal so I expect you need more than 1. I think the tmc ones are the best, just visit a stockist and I suspect the answer you seek is two of the biggest ones and a suitable pump.


I do not understand t1's logic...I.e his logic suggests. if the flow rate needed for 1 is say 1000 and your pump does 4000 then you need 4xuv....I think you will just have 4 uvs with too high flow rate for the kill to work as the unit says 1000....adding more just means the first ones do nothing and the end one will only work if it drops the flow rate to the designated 1000? Splitting 4000 between 4 would work as they all end up with 1000 each but that would need a 4 way split and equalising. The problem is we have no real way of testing but basic physics would suggest the 4 in a row is long.

I use 2 in series simply as what might get past the first may get killed by the next but I use a very slow pass rate (this also has a by product of heating the water)


I can speak to tmc and see what they say.
 
Having more than one UV is inefficient. There are many UVs out there that can 1000s of gallons. New tanks can be designed to have one UV with the planned flow rate and dose required.
I would definitely stay away from the bulb type UV as mentioned by others above. Do you guys in the UK have other UVs other then TMC?
 
motoro77 said:
I run uvc pond with stingrays lots years never got some parasites what do you have to say abut that T1?
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what i have to say about that is you are still not using the right unit
 
Just Toby said:
I do not think you will find a uv big enough for a 500 gal so I expect you need more than 1. I think the tmc ones are the best, just visit a stockist and I suspect the answer you seek is two of the biggest ones and a suitable pump.


I do not understand t1's logic...I.e his logic suggests. if the flow rate needed for 1 is say 1000 and your pump does 4000 then you need 4xuv....I think you will just have 4 uvs with too high flow rate for the kill to work as the unit says 1000....adding more just means the first ones do nothing and the end one will only work if it drops the flow rate to the designated 1000? Splitting 4000 between 4 would work as they all end up with 1000 each but that would need a 4 way split and equalising. The problem is we have no real way of testing but basic physics would suggest the 4 in a row is long.

I use 2 in series simply as what might get past the first may get killed by the next but I use a very slow pass rate (this also has a by product of heating the water)


I can speak to tmc and see what they say.
Click to expand...

my logi is that with a 25w uv the flow rate can be a max of 1700 lph hour you can go less than than and the uv will work better but you will find that as the water has a long contact time with the bulb it may heat your tank water

the logic is the lengh of the tube buy using 4 x 25w you have more than 4ft of tube light meaning that if you push more water throw it will still have the same contact time

uvs work better than uvc because a uvs has a thin glass tube over the bulb making the water have better contact with the light a uvc has a blub the sits in a bowl which doesnt give you the same contact
 
Just Toby said:
I do not understand t1's logic...I.e his logic suggests. if the flow rate needed for 1 is say 1000 and your pump does 4000 then you need 4xuv....I think you will just have 4 uvs with too high flow rate for the kill to work as the unit says 1000....adding more just means the first ones do nothing and the end one will only work if it drops the flow rate to the designated 1000? Splitting 4000 between 4 would work as they all end up with 1000 each but that would need a 4 way split and equalising. The problem is we have no real way of testing but basic physics would suggest the 4 in a row is long.

I use 2 in series simply as what might get past the first may get killed by the next but I use a very slow pass rate (this also has a by product of heating the water)
Click to expand...

Agreed
Flow rate u can run does not increase by adding more uvs.
I understand both cases here but I would not run all 4 in series.
It would work better if u split the flow into 2 from the pump then have 2 at half flow per line instead of 4 at full flow. So if using 4000L pump each uv wen pump is split runs 2000L max.
Flow rate is closer to specs for uv then to work the best- makes more sense that way to me
 
so for a 500 gallon tank what size uv to do i buy and and what size pump to run it,i have to buy next week so any links or advice will be good.Have never used Uv before so i know nothing about them.

If anyone knows the best place to buy in London would be good also.
 
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