hi buckhunter. like i said , i am no expert but my room was 3x4x6 dxwxh so half of yours, and had 400w hps. if i was you i would make that room 4x4 with 600w hps
OR get another400w and put them side by side with two in there OR a light mover.

good luck,hope all goes well.
bigguy.
bigguy1977 Reviewed by bigguy1977 on . Lighting and temp Ok, im in a 6x6x4 grow room and im wondering if I bought the right light. Im using a 400w met and wondering if its enough or to much. Also just wanting to know what the temp and humidity range should be around. Thanks. Rating: 5