Thanks devil,
Exhaust help!! Anyone
Two things to consider when it comes to exhaust venting a room. Generally, the biggest issue is ridding the room of excess heat. The second factor is recharging CO2 depleted air.
Air we breathe runs about 300-350 ppm. That can be used up fairly quickly, especially as bud growth increases the nutrient uptake rate of the plants.
With previous setups, because of the layout of my house, I could run my exhaust fan for the duration of "lights on" time. This actually had two benefits.
The first is that, as long as I recharged my basement air once or twice a day, I could keep my plants happy with a steady supply of air with 300 ppm CO2.
The second was that the constant draw of air being pulled thru the room created a "negative pressure" in the room. This,
combined with a Carbon filter, meant that no smell was released from the room when the lights were on, and the plants were at their "stinkiest".
As I had my "night cycle" during daytime, when I was at work, no-one was in the house to smell anything when the fans were turned off ( I found very little smell emitted from my room when the lights were off, and I could get away with using an oxone machine to kill that little bit of smell upstairs). "Day cycle", which was my nighttime, is the stinkiest time for the plants, so the "constant on" exhaust fans would kill the smell, in case anyone came by.
I ran like this for nearly 2 years, and no one had any idea that there was 8 1000 Watt lights sitting over top of 180 plants, spread across 4 "ebb and flow" hydro tables downstairs.
As far as other advice, I always recommend having your exhaust fan up high in one corner of the room, with the intake door or opening in the diagonally opposite corner of the room, but low to the ground. I also had an 8 inch exhaust opening up high, but a 6 inch intake down low. This is what created the "negative pressure".....by drawing air out of the room faster than it came in.
Of course, this is what I do. It works well for me, but others may have better, or more practical ideas.
I encourage you to search the forums and gather as much info as you can, and make decisions based on accumulated information, rather than one man's advice. There are alot of gurus on this site, and I can attest to that as I have read some of their posts. But there are also many people who's advice you should take with a grain of salt.
Growing marijuana has many, many different dynamics, and everyone's layout, upfront costs, money available to purchase equipment....etc. are all different and the possibilities are numerous.
Research, using Jorge Cervantes' books specifically, before the internet, is how I learned everything that allows me to have great success.
I am fairly new to this site, so finding and posting good links will take me a little while, until I have really had time to browse all the great info found here.
If anyone has great links for the OP, please post. Good luck.
