Tried posting this is the grow room setup forum, no luck - hopefully someone here has an answer. I have faith. Kind of.

Got a Homebox L - (3'x3'x6'), looking to get the 14 plant hydroflora drip/fogger from Sunlight Sheds, as well as the 400w PowerPlant lighting Kit. Yes, premade, but I haven't had the best luck with DIY setups, I can afford these premades. For ventilation, I have a Fantech FR150 Centrifugal Fan (243 CFM) and am looking to get a 6"x12" Carbon Filter from these guys (they look discount, but for first time setup, seem to fit the fan well.

Here are a few of my dilemas, questions

1) I want to use my exhaust fan to both exhaust the room and cool the air cooled light. The setups I've liked have the filter hanging from the ceiling, attached with ducting to the air cooled reflector, attached with ducting to the fan which is blowing to outside the space. [Good Diagram w/o co2]

Now, in the Homebox, there are intake screens (can be blocked if need be) on all four sides at the bottom, as well as a main intake port on the bottom left side. The ceiling exhaust is top right. So, using the setup I described, my fan would be top right, putting my lights in the middle, and the carbon filter top left (same side as main intake port...) Is there going to be an issue with the air not travelling the distance it needs to circulate the room as it is coming in bottom left and being sucked up to top left through the filter? I will have an oscillating fan inside the room for internal circulation. Thoughts?

2) How should I position my fan? Most diagrams show it blowing horizontally through a side wall (when part of a series with filter and lights). Since the exhaust port is on the ceiling, do I want the fan vertical and use a 90 degree ducting bend to attach it to the lights or do I want to keep the fan horizontal and attach ducting on the exhaust side of the fan that will curve up towards the opening?

3) What is the best method for mounting things in the homebox, specifically the fan or filter? Are they just supported with the straps and duct tape if need be? Hooks?

Besides this, anything that pops out to people as a glaring mistake? Any and all help is welcomed.

Thanks.

for mounting go for the floor or a chain attached
air inlet is needed id use 6 inch flexi pipe

have the extractor outside the box sucking the air from the light out and then pushing it out through a filter that is outside the box

I new to the site but Im thinking of getting a XL Homebox. Does ur homebox have 3 holes or 2, cuz heat can be an issue with the 400w light. I was told to use two inline fans, one for the light and one for pulling fresh air in. Yes it is more xspendive but u can get ur light closer to ur babies plus if u use CO2 u wont waist it as much cuz in that small space ur fan will run 24/7. heat will be an issue. if ur not going to use CO2 then i would not worry about the second fan, But dont take my word just thought i could help.

this has always been the rule of thumb for me, 2 fans, and heat pulled out

A Real Grow that I Made Up: Super Skunk

check out my grow journal for pics of how I setup the homebox. Should explain any questions about the regular sized tent.