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Mr Cob

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  1. I've been using these bulbs for about 2 years now...14k and 20k...I prefer a more blue bulb as seen in better quality bulbs but the price is right so I have continued to use them. SE Mogul. I also find that they should be replaced sooner than higher grade bulbs. I don't have facts such as par readings over time...just what I have experienced from site of my corals. I try to replace the bulbs every 6 months.

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