They work 'OK', for the amount they cost too run, and the amount off heat that needs too be dealt with, they are a bargain, but the light penetration is nothing campred too an MH or HPS, you will get good results though.
MegaOctane12 Reviewed by MegaOctane12 on . Has anyone ever used these type of lights and if so what do u think or if not what do you all think of them and r they worth the time to full with r stcik with HPS lights Stacy http://cgi.ebay.com/GROW-LIGHT-FLUOREX-HYDROPONIC-400-600-1000-WATT-MH-HPS_W0QQitemZ260028325133QQihZ016QQcategoryZ42225QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Rating: 5