Quote:
Originally Posted by Bloodasp
To use it as a sterilizer yes, to light the tank, no. They will harm your tank more than you think, for one there's a reason why they tell you not to stare directly at a UV light and/or blacklight (which is what those security lights are), the effect would be the same with fishes.
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Okay, that makes sense, but don't MH light put out at least some UV light? It's about an 8" long bulb, very small....I figured it might be a nice moonlight. Especially when I have seen some freshwater people do this.