cutting and pasting this from a previous post...
Originally posted by
bobsakamoto View Post
here's a suggestion. when i was where you are i (uninformedly) thought that since "light=food" for plants then go with the larger light if i could afford it. what this meant was that i got *one* really big light, a switchable 1000W MH/HPS w/air-cooled reflector, $200.
since then i have learned that it is far better (for reasons you can check in
NebulaHaze 's tutorials on lighting, links below) to have more than 1 light with lesser or equal to wattage than it is to have just 1 light w/max wattage.
http://www.growweedeasy.com/cannabis-grow-lights
http://www.growweedeasy.com/led-grow-lights
and i know you're not looking to upgrade but the info here is invaluable
http://www.growweedeasy.com/grow-light-upgrade-guide
anyway, since reading all of that and understanding what it meant, i saw the newbie mistake of my initial light purchase. since then i have purchased a viparspectra 300 and 2 roleadro 2nd generation COB (link below) because, the latter, at only $100, are a REALLY good value for not just wattage, 400W, but perhaps more importantly, they are full spectrum. so in short this set up is very versatile since i have 3 lights (at 900 total watts) doing a FAR BETTER job at doing what my initial purchase, the 1 1000watt light, could, for only a little more money
in addition, doing it the "multi-light" way means a MUCH larger light "footprint" for your plants (see tutorials), and also one that is more versatile/more customizable. for example you can move them around, interchange them, etc., depending on say, strain or species.