I've got two 4x4 tents, in the first I've got three sherbet clones, there I'm running one King 1200, one Lighhouse blackstar V2 240 and a Viparspectra 450. The numbers don't correspond to any wattage usage as in order they're using King = 1.95 amps at 120 volts=234 watts, Blackstar = .9 amps x120= 108 watts, and the Vipar at .8 amps x120= 96 watts. So to sum this, total LED wattage for this tent 438 watts. In the second tent where I'm growing the three GDP clones, just the King, and another Blackstar fixture using similar wattages, total for that tent is 342 watts. Now they're in the second week of bloom, and after 8 weeks veg and two for transition. A the end of veg on 12/15/16 is when I changed to 12/12.