Hello Jebus,

First off, to run any HID (HPS or MH) light in a confined area you need to cool the light and extract that hot air out of your enclosesure. The least expensive way would be to use a "cool tube" but for better light footprint use a air cooled hood. Plus you need to dedicate a decent sized inline fan just for this. If the room your tent is in is comfortable for you, the air from that room is fine for input. If not take the air from outside and consider running your flowering photoperiod from say 8pm to 8am (or whatever works for you during the night).

Next you need a decent sized fan to exhaust the air in the tent, and this out put will need some sort of air scrubber, either charcoal can or ozone to kill the odor. Some people combine the light cooling and exhaust with one fan by using the air in the tent to both cool the light and exhaust the enclousure, but this output needs an air scrubber also.

There's your starting point to get temps under control, hope this helps you.
oldmac Reviewed by oldmac on . i cant get temp down!! look at picture pls i cant get my temp down.. not with the tent-doors open or closed... nothing seems to help. ive even pulled a tube from window to the fan so it gets cold fresh air right into the tent and stringed a fan up against the HPS 600w to cool it down (does this even help? or does all the warm hot air just move about in the tent anyways?) any advice? should i leave all the doors in my house open? edit: oh yea forgot! My thermometer is IN THE SHADOW in the middle of the floor and i still get Rating: 5