Passive intake for small shed?

[GodspeedGrows]

I have a shed, 9x7x8. I am splitting it into two rooms. I have insulated it and lined with mylar. I am up in northern michigan.. so things dont really get hot.. heat isnt ever really a concern. I am planning on running 2x 1kw in flower and 1x600w in veg. I am using a carbon filter and 8" inline fan capable of 745CFM. Reflectors are 8" Blockbusters.

How would you go about cooling and intake on this setup?

My initial thought: pull through the carbon filter, two lights in the flower, one light in the veg, through the fan, and push outside.
I would allow passive air into the veg room with 3x 4in tube/inlet this air would then be pulled passively into the flower room through light proof ventilation from the veg room.

Thoughts?

 

[coldcanna]

There's a sticky at the top of this subforum that's all about ventilation, it will show you how to calculate fan size and also shows some different possible layouts. I also live in a northern climate so many times its beneficial to have the heat from the bulbs. You can buy a simple thermostatic wall outlet that will only turn on your fan when temps get to high, this works well for me. Also consider putting some type of louvers on your intake because in the middle of winter a cold breeze could really cause problems.

https://www.amazon.com/Lux-Heating-Cooling-Programmable-Thermostat/dp/B000E7NYY8/ref=sr_1_1?ie=UTF8&qid=1485617444&sr=8-1&keywords=thermostat+outlet

 

[Trich_Tyson]

I have a shed, 9x7x8. I am splitting it into two rooms. I have insulated it and lined with mylar. I am up in northern michigan.. so things dont really get hot.. heat isnt ever really a concern. I am planning on running 2x 1kw in flower and 1x600w in veg. I am using a carbon filter and 8" inline fan capable of 745CFM. Reflectors are 8" Blockbusters.

How would you go about cooling and intake on this setup?

My initial thought: pull through the carbon filter, two lights in the flower, one light in the veg, through the fan, and push outside.
I would allow passive air into the veg room with 3x 4in tube/inlet this air would then be pulled passively into the flower room through light proof ventilation from the veg room.

Thoughts?

See above..
couple things tho.. if you pull intake thru veg.. those plants will suck up some CO2 and air will heat up a bit in there before entering flower.

I don't think that fan will be enough to cool anyway.. maybe if you air cool separately?
I use open hoods so idk.. but I use an 8" on a four by four and needed to get a 6" for the intake.. passive wasn't enough.

Also.. Pulling thru the filter and then thru all those lights and then out.. you risk pulling stank air into the duct AFTER the filter. Seal everything REALLY good or figure out a different way to filter.

Lots of good info here.. spend a lot of time planning.. it will pay off

Also.. nice link cold canna.. good deal. I have my intake from the window on thermo control.. but i went with a titan that has idle modes which I dial way down.. minimal positive pressure so that nothing escapes back out.
I might scoop one of those though for my exhaust into house.