What would your setup be for a DR90?

I've just downsized my tent to a DR90 due to convenience in living space. Because I live in a hot country and am growing indoors controlling the heat is an issue for me. The extractor fan I'm using is a "System Air RVK125E2L1" as well as another input fan which is a "Vents 125". Air conditioning is not an option for me so the next place I'm looking to cut down the heat is the lighting. At the moment I'm using a cool tube with 400w MH bulb and current room temp is avg. 26-27 degrees Celsius. Would I benefit much if I used 250w MH bulb or T5's instead? Or do you have any different ideas? Also this setup will mostly be used for the veg stage rather than flowering. Thanks

Well then I would use a led light or strictly t5 tubes for veg.

I got cfl in the end but heat still at 30-32 when on

LED lights are pricey, but worth it with the mininum heat, my freind used them and had to add a tube heater to his grow just to keep his 400w of led over 22c, but the yield was not as impressive as they state in advertising.

That's what I have heared, the problem is its too hot need to cool down the tent ... ??? Hummm??

The only other suggestion would be a window a/c in the room o a portable a/c. If the temps out and in are too high what cool air are you getting?

Ahh good suggestion