At a 50,000 hour life cycle who gives a $%%#@$ if they're replaceable or not? That's 11 1/2 years at 12 hours a day... at say $100 a bulb, (ya right!), replaced yearly would be $2200 ALONE over the life of the fixture... factor in 40% energy & heat savings... couple THAT with reduced chiller & AC costs... I'm tellin' ya... if these grow corals and make my water shimmer I'm in! 
AND you can actually shift the colour temp as well... built in timers & storm simulators... imagine where this hobby would be if nobody ever thought outside the box... 
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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