Please Help! Problem with my grow setup!

[dannybest]

Morning guys, I have a small setup in my closet where I have a 400w dual spectrum light and all the inside is cover with mylar foliage.
After few days I figure out that my soil from the pots its very warm and inside the closet is more than 37-38c, I put a small fan and sometimes I let one door open, I can get 33c.

Do you think I should take the mylar away, temperature will decrease? Or what do you recommand.

 

[T macc]

You need a proper exhaust fan. And intake

 

[dannybest]

You need a proper exhaust fan. And intake

Ok this should be a solution, but if I change the light, from 400w to 250w, the temperature will decrease also?

 

[Renfro]

You need a proper exhaust fan. And intake

agreed.

Ok this should be a solution, but if I change the light, from 400w to 250w, the temperature will decrease also?

Less wattage = less heat.

sometimes I let one door open

Thats gonna bite you when flowering time comes. Forget and leave a door open and let light in when it should be dark.

Sounds like you are trying to make the best out of a situation. One can cut a piece of plywood that would fit exactly where the door goes (sounds like you have two). You can then use that as a way to plumb intake and exhaust without cutting the closet up. You need a good blower. Something that can exchange the volume of the closet at least 2 - 3 times a minute. Probably end up wanting a carbon filter too.