Was looking into a mars 1000watt not sure wich one it was but wasnt happy with the actual wattage. And on that note does that formula of wattage predict yield apply LEDs. Almost everything else is different from hps or mh when compared to LEDs
The number I normally go by is .65 grams per watt drawn, then start to improve from there, i am on my first grow with the mars hydro tsw 2000w so I can't confirm or deny it