led light? Lumatek zeus 600w pro is in my mind

if you don't want to build one, that's a solid one according to migrow -- only thing in addition to that review on youtube is to look up lumiled's L80 or whatever it's called - how many hours before 80% intensity. if it's 50-60k, then it's a solid choice you can do better. products with LM301 diodes are more efficient than lumileds. i think his video showed a 2.3umol/s / J? with LM you'd be pushing 2.8 @1.4A (not suer what the zues thing runs at for true comparison) Runs even better at .7A but need nearly 2x as many -- few less because it's more efficeint, eh... if you can find a QB or strips/modules that use the lm301, that'll be a better way to go.. if spending the money, might as well. simplicity of the in-a-box light can tip the scales for some,... just depends.