I love this product so much! These types of lights arent as efficient as LEDs (You'll pay a lil more in electricity), but i had some plants under LED and CMH at the same time, and the plants leaned to the CMH (4k bulb)! The quality cannot be matched both in product and what it produces! I have been running one for 6 months 18/6 and its a little warmer than the LEDs, but not unmanageable with just a fan. No problems - No bulb dimming - No waiting years for a ROI as these are cheaper than LEDs. A++
