Heat problem

Hey all - Hope you are enjoying the holiday season

It is summer here now - and it is hot!
Daytime temp is about 91f (33c) ... Nighttime temp is about 70 (21c)

I am currently vegging from 4pm through to 10am ... to keep the heat down in my grow room ... but is is still around 93f (34c) when the light is switched on

Any ideas? ... I have a 6" /150mm In-Line Extract fan and cool tube light with computer fan for extraction

I am fighting a losing battle?
Is air-con my only hope?
What happens to the crop by having it a such high temps?

Any feedback would help! - Thanks all!

How big is your room? Seems to me you need to get cool air from some where.. You are just blowing warm air on the problem.. Sounds like you need a A/c Good Luck.. PEACE

Room is 4ft x 5ft x 7ft (h)

you need to pull air from a cooled space or like bigguns said a/c

get the right shit cpu fan what a joke spend some money on you set up good fans ect