Parabolic - Large Silver Reflector

hi guys ive just got one of theses reflectors and was just wondering are they any good?
also my room is 5ft long 4ft wide 5ft high. how many ladies would you suggest i put under
her. the light gonna be a 600watt also ladies have been vegging for 2months. plan on putting
6 under. any advice more than welcome. peace!!!!

6 should fit fine. You'll just have to flip or 12/12 your plants at no more than a foot tall or less to not top out in a 5 ft tall cab. Parabolic hoods are great. When we were kids that's all there was before enclosed vented hoods came around. With the parabolic hood you are almost growing vert bare bulb which is good. You might want to drill holes in the hood in that small of a space to move heat. All so a small small fan on the ground pointed toward the bulb will help cool the bulb but your gonnna have to have good intake and exhaust for air movement.