Led's and moisture
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Old 12-15-2013, 11:32 PM   #1
Deano85
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Led's and moisture


In a freshwater setup is it necessary to use a splash guard? Even if the lights are a couple inches away from the waters surface?
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Old 12-16-2013, 12:54 AM   #2
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I think the answer depends on the manufacturer's suggestion for their particular light fixture. Most that I've seen won't warrant any failures if you don't use a glass canopy below the fixture. You also need to be aware that many 'knock off' brand fixtures aren't water resistant or possibly even UL or similar safety rated.
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Old 12-16-2013, 01:43 AM   #3
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Ok, I consulted with the manufacturer. He said he doesn't know.
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Old 12-16-2013, 05:08 AM   #4
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A convenient answer

Yes, bare LEDs are vulnerable to moisture ingress, even from condensation.
I lost a few bob having to replace ≈ 12ft of 5050 LED ribbon because the LEDs drastically lost their intensity within a few weeks above the open water surface.
I replaced them with ribbons that are hermetically sealed in a clear plastic tube.
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Old 12-16-2013, 07:27 AM   #5
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If its some kind of a fixture with a lens, you should be fine w/o a splash guard. That said, you need to clean the lens everyonce in a a while, as it get gunked up and loses intensity realllly fast.
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Old 12-16-2013, 03:27 PM   #6
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My LED light has no splash guard, and sits about 2-3 inches above the water. It has been in constant use for over 2 years now, with no problems, and no visible deposits on the LEDs. I don't have any rising streams of bubbles in the tank - no airstone, and no CO2 mist. If I had a strong airstone flow of bubbles I suspect there would be problems. It is bursting bubbles at the water surface that "splash" the lights. (My opinion.)
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Old 12-18-2013, 05:28 PM   #7
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LEDs themselves are for all practical purposes 100% waterproof indefinitely. Their associated electronics however are quite succeptable to moisture damage due to their use of high frequency switching. Just keep condensation off of direct contact with the contacts/components and you'll be fine for several years. Keep everything away from humidity and you'll be fine for the life of the fixture.
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