Hey the cool thing about getting a 1000watt hps is the new bulbs they have for them. I am using one..
solarmax1 bulb which is a 600hps and a 400 mh in the same bulb. You get both spectrums.
I have never seen such growth when using these bulbs UNREAL. add a light mover and your good for 20 plants.. 1000 watters can create alot of heat.. if your in a small room you may want to add a glassed in hood with vent to control the heat and allows you to get the light alot closer.
Get ready for some unreal buds