:thread::thread:
There are defiantly LEDs on the market that will out yield HPS,just look at Seymour's last grow he use 2 year old Lights at 300w and easy got 500gs. If you have 400w LED with a good spectrum there isn't much wasted light where a 400w HPS has plenty wasted.
:gthumb: good call... they are TANKS! and powerful LEDS as well... a pair of 310's will rock your 4 x 4 nice!2-310w California Lightworks LEDs