1800 watts in 4x4x7 tent???

Start with watts as a unit of measurement by the power company to bill you it's power used not light produced or you could equate a ten bulb 100 waat incandescent to a 1k hid, wrong spectrum sand waay les lumens to boot. Par light is where it's at the actual lumen s the plants use!! &k lumens will do great per sq ft. So in this tent a 1k can do 145k mumens hps dide it and you're set a couple 600's would do too as they produce more lumens per watt than 1k's but less penetration but better cpverge as two points of lite and closer/. many have debated which is better they both work in differenty ways.