my grow room isn't huge ony 1mx1mx2 1/2m and holding a 600watt light, i have good air circulation and air intake with an extrator trying to suck out the hot air. i am running at a constant 90 degrees F and it is pissing me off imensley. the balast is not in the room and i have just invested in a large fan to try and help it out but seems to have done fuck all. the plants seem fine they are healthy looking with new shoots apearing all the time but i just need to get the temp down by 15 degess. anyone got any suggestions. i would change the light power but im poor and cant afford a new balast and light.