Hi guys so my set up grow tent is 0.9x0.5x1.8 metres i have a 4" tt intake fan and filter set up with ducting and a 400watt hps. problem is my temperatures are high! With the doors closed and sealed im up to 100 degrees even with all the door open on the tent the lowest is around 81-82degress. How can i reduce the temps? I was thinking of changing to a 250watt lamp or getting either a 250/400watt cooltube or will a bigger intake fan sort it? Thanks in advance!