please help me cool my lights!

this is what it looks like somewhat. i have 3 600w hps wth temps between 81-83 and they wont drop. i have 442 inline fan and 160cfm booster hooked up. also purchased a 240cfm booster. dont have any money for electric so how do i keep room cooler? where should i place 240cfm booster? i have 7 plants under each light and just want to keep the room as cool as posssible. please help me in any way you guys can. thanks RIU FAM! there are bends in the ducting could not do better pic beacuse im on my phone so its not in a perfect line as shown but in same order.

Maybe split intake into 3 seperate ducts.so each light is receiving cold air. My 2 cents
.

Start by ditching the booster fan.

Assuming you have no other restrictions in there such as a carbon filter or some REALLY crazy kinks in your duct, that fan is probably slowing you down. The booster is designed so the motor is putting out it's full power, and the fan moves 165 CFM. If you are pulling even more through that fan, the fan acts as a restriction.

I'm not sure if that's a huge part of your problem, but it is something to consider.

What inline fan do you have? That might be a problem. Most of them don't pull near their CFM rating. Also, do you have any curves or bends in the ducting? That can restrict airflow.

First off, you should make it so your most powerful fan is pushing through your lights, so that any air leaks in your hoods don't pull out stinky air. Any 90 degree bend in ducting reduces CFM by about 15%. If you have a two rows of lights I would go

Intake
|
Biggest Fan
/\
lights lights
| |
lights lights
| |
lights lights
\/
Booster
|
Exhaust

Hope this helps.....general rule of thumb is to try and have 200cfm per 1000w of light for your exhaust fan. If you don't have an exhaust fan and only have an air-cooled lighting system, I would highly recommend getting one - or an AC.

First off, you should make it so your most powerful fan is pushing through your lights, so that any air leaks in your hoods don't pull out stinky air. Any 90 degree bend in ducting reduces CFM by about 15%.

Intake
|
Biggest Fan
/\
lights
| |
lights
| |
lights
\/
Booster
|
Exhaust

Hope this helps.....general rule of thumb is to try and have 200cfm per 1000w of light for your exhaust fan. If you don't have an exhaust fan and only have an air-cooled lighting system, I would highly recommend getting one - or an AC.

Removing the Booster may help, especially if it is a smaller diameter than the ducting. Also, make sure the holes cut for intake and exhaust are at least the same size as ducting.