I'm putting plans together for a new grow room. What I'm trying to figure out is what would be the optimum setup? I want to keep temps between 70 and 85. I want to only cut one intake and one exhaust hole if possible. Please see specs below.
Outdoor shed located in CO 8'W x 12'L x 8'H
Heavily insulated, drywalled, floor insulated with 1 inch pink stuff foam board, walls have additional half inch mylar
want to use turbine exhaust vent 8 or 10 inch with charcoal scrubber of some sort no smell to escape
two thirds of room will be flower with 3 1000s or 600s and one third will be veg with two 600s or 400s
I will be using a co2 burner
I'm looking for the most effecient way to run ducting for cooling and trying to optimize the co2.
Thanks for input
Wow, thats sounds like a dream operation for most people. The first thing I would advise is that your ventellation system will have to be VERY adjustable. You are living in an area (Colarado?) where outside temperatures fluctuate from one extreme to another, therefore, when working with a grow space that is located outdoors as well as intaking (is that a word?) outdoor air (which is fine) you will have to be able to moderate what is going on inside with different measures such as speed controls, thermostats, humidistats, c02 meters, possibly heaters and/or a/c units and a dehumidifier. This sounds like a lot to deal with but you can make life easier by taking some key steps now to avoid a headache later....
Let's start with the intake..
Intake
If you would only like to have one intake a good idea is to ensure that the air enters the room on the oppiste end from which it exhausts which will force it to travel across the entire growing space. I would reccommend that you use an intake fan slightly larger than what you think you need and install a speed control to that allowing you to adjust the airflow which will be key (along with the exhaust) in controlling the temperature and humidity inside based on the temperature and humidity outside. Usually you only need a speed control on the exhaust fan, but when you bring in non moderated air from outside you need one. Also make sure your intake is protected from bugs and other pests entering.
Exhaust
Once again you will want to go big here the largest filter and fan you can afford and also install a speed control. I would focus your exhuast more on the flower side of the room and have as short and direct of an exit as possible to help make it work as efficiently as possible. You could possibly on your veg side have a separate small fan and filter combo and "T" that to your main exhaust line as long as you put a baffle in the smaller exhuast line so that it only opens into the main exhaust when venting. You will have a lot of heat generating from all of those lights + co2 burner and you will need to be able to turn it up when the lights are on. and if it happens to be really warm/cold outside and you are piping in hot/cold air plus the shed itself being heated/cooled by nature you are going to possibly need the back up of a thermostat controlled air conditioner and heater, that way your system can somewhat automate itself with out you standing in there all the time adjusting speed controls. Add in a dehumidifier and you have good environmental control indoors despite having no control outside.
Good luck and let me know if you get started
