Project Info: 100W/6500K LED project to replace 250W MH Reef Aquarium Light. Pieces: LED: Dealextreme www.dealextreme.com Driver: Dealextreme www.dealextreme.com Heatsink Grease: www.dealextreme.com Heatsink: HeatsinkUSA www.heatsinkusa.com 100W 7300K LED – a little more blue: lightake.com Project Benefit: 100W LED lasts 10 years compared to 6 Months for a good quality MH Lamp. This LED “Appears” as bright as my old 250W MH (which used 285W each) Between bulb replacement and electrical savings, this should save 0/year. Not to mention that LEDs DO create heat, but nothing like MH lamps. I was able to turn off my 1/4hp chiller with no overrun!! Notes: When it comes to reefkeeping “Bright” is not necessarily “Right” – color temp is very important. Time will tell if this setup works as well as I think it will. It looks Great – and I love the shimmer! My Aquarium page: www.guarriello.net Although I last updated this page in 2002 there are some pretty good DIY projects Maybe I’ll get around to updating soon – but YouTube is so much easier! Pre-assembled Units: I’m considering selling a pre-assembled unit for hood retrofit. This would be a unit that is protected in a water-tight enclosure with a clear lid and thermal switch to protect the LED. The heatsink would be on the outside and it would have to be mounted in a hood with a cooling fan. I would provide it with a US 120V power cord and mounting hardware. Cost would be around 0. If anyone is interested, please post below.