Anyone know these light's/company?

There's so much variation in the spectrum/appearance of bulbs from different manufacturers it's hard to say without seeing a spectral analysis and photos and of what their bulbs look like in operation over a tank. They have a two week guarantee so I suppose you could send them back if you don't like them, but I'd probably call and ask them specifically how their 20K 400W bulbs look and operate in comparison to known brands like Ushio, XM, etc.
 
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