DIY LED UV sterilizer? CO2 reactor? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 02-03-2018, 05:09 PM Thread Starter
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DIY LED UV sterilizer? CO2 reactor?

Just wondering if anybody has ever DIY'd a UV sterilizer using the UV led chips designed for UV sterilization that are available on the market today. Wouldn't be too hard to make one that was a combo inline CO2 reactor, would it?

I was thinking about how many of the DIY CO2 reactors I've seen that are clear and thought maybe you could put the light on the outside facing in. Anybody care to comment? Ideas? Suggestions?

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post #2 of 4 (permalink) Old 02-03-2018, 07:36 PM
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UV penetration through glass and plastics is a no go.

Quartz sleeves are used in UV applications.

Financially it may not be worth it, but it could be done!

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post #3 of 4 (permalink) Old 02-04-2018, 12:47 AM
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Sterilizing LEDs need an emission wavelength of about 275nm. These are often called UVC LEDs. Most UV LEDs you see on the web have a wavelength of 400nm or higher which will not have much if any sterilizing effect.

Most UVC LEDs are very low power emitters (about 20ma) and cost a a lot more than 400nm LEDs. 1W UVC LEDs do exist but last time I looked they were about $100 each. So a LED sterilizer is going to be expensive. And Yes you need to use quartz. Regular glass or plastic will block UV. All of the UV sterilizers I have seen use mercury lamps because they are cheep. The cost of UVC LEDs is the main reason no one sells UV LED sterilizers.
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post #4 of 4 (permalink) Old 02-04-2018, 02:13 AM
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