Working on building one also. Cost $380 for materials. Using Golden Dragon Plus top bins and TONS of heatsink (150cm2/watt).

Someone earlier mentioned going back to HID to save $$. This may be true for short term cost, but the long term cost of replacinghortilux bulbs would be greater than the cost of a proper LED. According to Philips, an LED cooled to 55C (junction 68C) will maintain 90% of its initial brightness for just over 40,000 hours. That is about 10 years of 12/12 use. I doubt most people are replacing the Hortilux bulbs after only 10% lumen depreciation. Some say that the human eye can barely discern 30% depreciation.

So when you consider the electricity savings and the bulb replacement cost of Hortilux or Son Agro bulbs, LED comes out on top even with todays prices for top bins.

Here's to hoping for the best! (>1 gr/watt)

LED Reliability and Lumen Maintenance
SupraSPL Reviewed by SupraSPL on . LED lights anyone 21 days and im bout to invest in leds but not sure what type. any ideers?:D Rating: 5