I am shutting down my 65g and will be selling my LED light fixture. I purchased this from Reef LED's on this site about 5mths ago. Light has 60 3w cree's "36Blue/24White" Driven by 5-ELN 60-48D dimmable ballasts. Also I have hooked up 3 Enercells to dim lighting to your preference. The heat sink measures 24" x 8.5". I paid over $700 and about a day of labor to assemble. Asking $400 + shipping or will trade for a Vortech MP40W ES