when i told lumatek that the driver is very hot and i can't touch it after 30sec they told me it needs to be replaced and the same day they gave me a new one without checking the defective, that is super convenient if you don't have a second light.
As far for the new led the temps i have are similar, something that i had been warned from the company, with the old i had 78-86f and with this i have 79-84f. It's not the temps inside tent that determines a defective unit, they told me, but if you can touch the driver or not.
The driver at first day was very hot, i could touch it but with difficulty, at next two days, although the temp climb up by 35f the driver was cooler and It was more comfortable to the touch.
They suggest to upgrade to a 3.3x3.3 tent and also bigger exhaust fan, which is sound logical, but i'm a little worried if i would see a significant drop at temps.
As for the size of exhaust fan i asked 8 companies and they all gave me different answers. So far based from what they've told me for a 3.3x3.3 tent i need something between 117-412cfm
I thing 260cfm, with speed controller of course, will be ok to to cope with the high temperatures of greece.