I use the same t5 and I had heat problem when I had it in a grow tent. I end up have to open the tent to vent the heat out and have another fan blowing cool air in are it get too hot and have high humidity .. But yours seem to be okie so far..
LSD grow Week 2 flower
18 LSD plant , canna coco grow medium , 1000 watt nextgen with water cool liquid lumen, co2 system keep around 1500 ppm, all in a 4.5ft by4.5 ft secret jarden grow tent.. And carbon filter