New box need help on heat control

J Cakes

Member
Ok as of right now i have a smaller grow box for my plants they've been growing for about 2 weeks i have constructed a bigger box 5f tall 2f 6in wide and 2f deep. for when i bump them into veg. stage. Here's the problem im going to be useing an 400w. mh with a 400w.conversion ballast. i have 2 120 DRAGON Hydroponics Cabinet Cooling Fans for intake. I also have a twin window fan that im usein for my exhaust. my temps are runnin too high it's up in the high 80's almost 90's. and my humitity is between 35% and 45%. if u could give me any tips i'd apprieciate it.
p.s. attached are photo's of my box
 

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Not only is that fan not strong enough, it is going to let in a lot of light during your dark period and could cause hermies. Upgrade your exhaust fan and make the box light tight
 
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