I'm a little confused and don't see a problem from my point of view
1) You don't have to worry about any patent infringement if you're just building your own fixture, only if you're manufacturing and selling it. DIY'ers are safe.
2) There are a number of problems with LED systems, they are too expensive, they are more complicated than the average system, and they are yet to be proven as a sustainable and effective alternative to existing products for the average reef keeper. No matter how you look at it LEDs are low power which makes them less practical for this industry. I see great potential in residential lighting if the cost can be reduced but not so much in our hobby, well except for moon lights.
3) LED is just a new idea and popular as a result of marketing more than anything else. In five years something else will be out that's far better, even as we speak there are better things on the horizon.
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