2.5x5x7 What size hps?

What size light and reflector would you guys recommend? The closet is actually 7' wide but I want to use some space on the the end for veg and cloning. Is that good use of the space?

I used a 600w in 2x4x6h with great results

Are you using the light just for veg? because mothers, clones, and flowering plants cannot be in the same room.

He'll just have to partition the spaces off to keep the light seperate.

Anyway the best light for that narrow and wide of a space is to use TWO 250w hps's for the flower area. If you can't manage that much heat then two or three 150's would also work ok. Because your space is twice the width using two lights to spread the lumens more evenly is your best bet.

400w can handle 3x3 area if your going to partition...