I've tried some of these inexpensive 165w bulbs and this is the cheapest and has a better color match than some other bulbs I've tried that cost $30-$40 more. I bought 10 of these bulbs, I had an issue with the blue channel on one unit and the seller quickly sent me a replacement, so 5+ on customer service. The build is nice and I prefer the power input and dimming to the side rather than the top like most other 165w bulbs. I've only used them on fish systems so I can't confirm how they perform on corals but I can say they look good on fish systems. A very good buy so far, let's see how they stand the test of time.
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