UV led's as a starilizer

  • We are currently upgrading MFK. thanks! -neo
I bought a new 13 watt UV for my lungfish tank for $34.99 on ebay. The deals are out there if you look for them. And, I've seen replacement lamps for as low as $9.99 also on ebay.
 
portabuddy;588669; said:
thanks for the reply, this made for good, interesting reading. Well i checked with my local plastics place and they confermed what a quick goolgle search gave me they said that stardard acyrilic/lusite/whatever lets through 93% of all uv light unless otherwise specified/treated, so this will let through the uv rays, now i was planning on drilling holes in the right hand side and flush mounting them in there so the led contacts the water, the reason for the bafles was to allow for more dwell time, interesting point on the strength though, the ones i got are 10000mcd, 20mA, 3.6V leds that, i could have used this info befor i placed my order(i got 50 among other leds i got) it didnt cost me much and i was going use a old 1.5A 12V laptop power suply for this.

the only problem is that they are 400-405nM not the 253-254nM you guys recomend, this is almost a quarter of the recommended wavelength, but it is around that of the uvb that water treatment plants use to sanitize drinking water, i was going to make it longer then shown in the crappy paint drawing and wrap everything all around in reflective mylar since its cheap/avalible and it reflects 98% of all light, mirrors are a tricky thing since the glass they use absorbs uv light and mirrorized plastic is expensive.

but since the wavelength is off I guess there is no reason to continue?, right or will it work still? i kind of want to make this work because i have pretty buch everything laying around from other projects(except for the led's, but now i have those too).


and BTW i would hook up 1000 leds if a had to and solder resistors to eack and every one, im just that nutz.

and i am a die hard diy'er if i can make it rather ten buy it i will, and as far as buying the lamps goes, they are expensive... unless you guys know there to get some cheap?
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:thumbsup:
 
i think i understand that you are going to drill holes in the side to push the leds in so they contact the water . if this is right , why not do the same but with a uv bulb from lfs just buy the bulb and put it in the side . instead of of all the uv led lights , just a thought . digram looks good i am just thinking how to make it easier for you . to run the bulb all you need is a old plug wire and two little connectors . my uv bulb has two prongs at the end . as long as the wire is connected to the prongs it should be fine when you plug it in . i am no electrision though . (ask befor you plug it in ) . but your idea is great . when you finish this project please let us see pictures .

brett
 
brettrotchell;588844; said:
i think i understand that you are going to drill holes in the side to push the leds in so they contact the water . if this is right , why not do the same but with a uv bulb from lfs just buy the bulb and put it in the side . instead of of all the uv led lights , just a thought . digram looks good i am just thinking how to make it easier for you . to run the bulb all you need is a old plug wire and two little connectors . my uv bulb has two prongs at the end . as long as the wire is connected to the prongs it should be fine when you plug it in . i am no electrision though . (ask befor you plug it in ) . but your idea is great . when you finish this project please let us see pictures .

brett
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Whoa :eek: ... Most UV lamps are flourescent and need a ballast transformer.

Dr Joe

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