Lets see 20 x1000 =20,000- watts 2.5 a light =50 x 448 =22,400..I have seen lot of rooms most average 1 per some 1.25 per light..But there are 2 other people that I know that hit 2 to 2.5 a light with strains like the White and Whte Fire.. With Super Silver and Blue Dream I have seen them hit 3 a light..i have also seen 30 light rooms yield 10 pounds..:sweating You really have to be on top of your game and not High as fuck chasing your tale all day its hard but you have to burn once all the work is done.. I tell everyone that grows work smarter not harder..Make a long check list of things that need to be done Daily IE.. cleaning, Weekly Foliar spraying, Nute Change outs, Cuttings, etc...And if everything is not checked then your not going to come close to hitting those #'s....And many people get stuck on 2 per light its stupid most strains will never come close to that you should be happy at 1 per light...I had several pms where people said they where first time growers and if they did not hit 2 per lightthey where going to lose there grow and there house and they needed to know how...Its crazy how people think that those # can be hit with the basics....It takes ALOT of hard work and everything has to go perfect and the odds are against you...JACK
bIG uPS TRUEGRIT...:ninja