UV LEDs - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 10-28-2014, 04:32 PM Thread Starter
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UV LEDs

Anyone got experience with havin UV LEDs over the tank? Im wondering if they will help kill some of the smaller alage/bacteria inside the water like they do when u buy a UV sterilizer obviously not as much tho?
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post #2 of 5 (permalink) Old 10-28-2014, 04:44 PM
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They will not. Any LED in a wavelength short enough to do damage would also make life for fish and plants very uncomfortable (to put it mildly).

Sterilization is generally done in the UV-C band which is <280nm. Most UV LEDs you purchase are probably closer to 400nm.


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post #3 of 5 (permalink) Old 10-28-2014, 07:49 PM
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have u tried a uv sterilizer to help?
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post #4 of 5 (permalink) Old 10-29-2014, 12:47 AM
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Originally Posted by 691175002 View Post
They will not. Any LED in a wavelength short enough to do damage would also make life for fish and plants very uncomfortable (to put it mildly).

Sterilization is generally done in the UV-C band which is <280nm. Most UV LEDs you purchase are probably closer to 400nm.

And needless to say, you (and your family) wouldn't want exposure to short wave UV!
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post #5 of 5 (permalink) Old 10-29-2014, 01:42 AM
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Even if the 'wrong wavelength' was not a problem, you would have the problem that the UV won't penetrate very far into the water.
In a UV sterilizer the water is routed through the system so that it is exposed to the UV in thin sheets. This exposes the organisms (algae, single celled parasites, disease organisms) to the full strength of the UV, so it kills them.
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bacteria, leds, lights, sterilization

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