Quote Originally Posted by cajole
[attachment=o48277]this may sound stupid but if i use two 200 watt halide lights will that have the same effect as using one 400 watt halide light?
I would say the effect on your electric bill will be the same. The effect on your plants may be different. One 400w bulb shines from only one part of the room. upper centre no doubt. Therefore some of the leaves struggle for adequate light. 2 200 lights will spread the light more evenly depending on your placement of them.

Does that help?