grow room temp 100 f need help

This is my first post and grow I have a .8 metre x .8 metre room with a 400 watt MH for veg 2 rvk fans which move double the air for the room size (intake and exhaust) a normal fan to circulate air got five plants that are 2 weeks old from seed all got two main sets of leaves others just starting to grow. Growing using air pots my problem is the room temp is always above 90 f I took my carbon filter off the other day to try and reduce air flow restcition still no better. Has anyone got any ideas. Thanks I look forward to the replys.

Have you got 2 fans or just 1 for intake and exhaust? If you have a passive intake make sure its big enough, if its too small then the fan can't run at full capacity. A good way to check is to put your hand over the fan and open and close your door, if it feels like more air is coming out when you open the door then your intake is too small.

Other than that you either need another inline exhaust or intake fan, an air conditioner, a less powerful light or a bigger room, not a lot else you can do.

I've got two fans one for each

400+ cfm fans?

I would try using both fans as exhausts and cutting 2 more holes for intakes. Make sure both exhaust from either side of the room or one at top and one at bottom. Not sure what else you can do apart from getting more powerful fans or air con.

Get a real fan, and make sure your intakes are twice as big as your exhaust. what is the air temp of where your getting air? As long as your replacing the hot air with cooler air then your temps will drop. Are your intakes coming from the same place your exhausting? a pic or a simple drawing would help bunches.

You didn't say if you had a cool tube around the bulb to exhaust that air out of the room? If that doesn't help you will need supplemental cooling small window unit or a/c on wheels. Those temps above 85 are going to stress out your crop.

Can you post some pics of the setup?

My intake is in the loft at one side and exhaust also in loft at other side.

It looks like your intake and exhaust are right next to each other you need to have the intake bringing air in from the bottom of the room with of at the top it is just sucking warm air back in

a Vortex venting fresh air inside & a few holes strategically place as exhaust point could help a lot reducing heat