A vortex will move more air then a squirrel cage will. The design is just better, I run 3 of them but I still have several squirrel cage blowers on the shelf as a back up.

Cool tubs are 6" round glass and a good 6" vortex when you bring air in from the outside of the room and blow it through the light and back out the other side will work. I promise you do not run as many lights as I do and they work for me just fine.

If you are still having problems then it's something else that is missing we need to talk about.
You are growing indoors in a sealed room.
Where is your AC unit installed?
How are you venting the heat from the AC?
Is your ballast inside the room or outside the room?
When you vent the heat what are you doing with the air?

We need to get this problem fixed ASAP temperatures like that will turn your plants into hermies.