Uv Dangerous Levels?

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TexasGuppy

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So, I did a DIY UV purifier by putting the UV inside a PVC pipe, painted w/ black enamel, and with drilled end-caps with black course sponge on the ends and an air pump to move the water slowly through it.

However, when the lights are out in the room at night, you can see the PVC actually 'glowing' blue a bit. Is that enough UV light that would be dangerous to the fish still? Should I add a couple coats of black paint until it's no longer glowing? I've seen people just place the UV light on the output of their filters, which I'm assuming is exposing the tank to much more than my black PVC...
 

aussieJJDude

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Unless you have the actual light in the tank with no cover, no it won't harm the fish.
 
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