Hello People : }

Ok so this is a bit overdue, as i have been coming here for a long time, and after alot of consideration and reading, i am going to do it and grow, the room is 4' high 3' long the outside wall is an internal breeze block wall which goes into a huge internal cavity, i have choosen an auto as my first strain, i purchased a 400watt euro reflector sodium bulb and the room is completely covered in heat + light reflector cover : }, now the heat from the room is going to go into the cavity through a carbon filter, the PROBLEM i have got is i dont want to cut a massive hole into wall, and would like to know what/how powerfull a fan would i need to pull air out of room as i know if will be hot as fook... i am hopefully going to grow 10 plants and thinking of getting a budget carbon filter ££ for the first grow, would a budget filter do the job : }....
any advice would be welcome....

welcome to the site bro
could u post a pic of room so we can see what u are working with and maybe could help
im confused where u plan to vent air to

No problem just fininshed room nearly just have to put in the ventalation and light, as before i am going to use auto's 12/12 once in pots. here are the pics of the room



the output/ carbonfilter will be in top left of 3rd picture

Damn! That's a sweet grow room you built there!

Nice!

Since it's a totally sealed room, you will have to cut a hole in the door to vent. Or were you thinking something else???

no no im not that NOOB : P here are some pictures of the room now, after some tinkering.

here is the finished result