Got 6 Blue Dream autos about 2 weeks apart on harvest. Growing in dry basement, 67 degrees 54% humidity. Using an AC Infinity 4x4x80 grow tent running a VivoSun 4” vent with carbon filter inside tent. Only use vent fan when the plants get mature temp gets up barely running the VivoSun vent stays around 67 all year long. House smells like a Pot head lives here. Not venting outside easy to do vent in furnace vent - one of those high efficiency gas furnace with PVC exhaust vents.
Everything closed tight on tent ? Filter year an half old but only run it when buds get fat and big.
Venting outside the solution?
Venting outside would be ideal and help alot with the odor. More important is exchanging the air inside of the tent that’s done with the exhaust fan thru out the grow.
I wouldn’t tie the exhaust into the furnace vent. It may cause resistance in the vent line, and reduce the furnace’s combustion air. It would also be against building codes.
Your situation maybe challenging to solve. If you move enough air outside to vent your 4x4 it will require 100 to 200 cfm. Pulling this much air from your house will cause a negative pressure, throughout the house. This will cause unconditioned air to be pulled into through all tiny cracks and openings in the house. Exhausting this much air really needs to be matched with the same amount of intake air from the outside. Of course this intake air may need to be conditioned.
I would try to just hang a small bathroom exhaust fan in the top of the tent, and duct this to the outside. This should keep the cfm low enough that it will not have much effect on the rest of the house. The added negative pressure in the tent will help hold the smell in the tent. AC Infinity has some cool window/door to hose kits for this purpose.
If you vent outside then your whole block is going to smell like your grow space. When i harvest and trim my whole block smells like a skunk farm. Use your filter
Not usually. The issues others have pointed out are valid. In addition, running your exhaust to outside will put your home under negative pressure. This will usually lead to increased heating and cooling costs.
A quality carbon filter that is connected properly to fan without leaks will do a pretty good job of keeping scent down. I would check for leaks, then to see if you have a lot of static pressure from filter. It may be clogged from dust or have been in too high of humidity to work properly.
My set up is in a crawl space. I’ve built a room in there and it is climate controlled from an hvac duct. I run a 6” hurricane fan into a 6” carbon filter. I then have the exhaust duct from the room going to one of the crawl space vents that vent outside.
Humidity and check for leaks made sense , I hand washed the charcoal filter cover and found a vent hose clamp loose. Needed an additional strap down from top off tent to support the vent as it exits the side. Vent hose is perfectly parallel now.
You’re the ventilation expert too .
You’re dead on HLG lighting. Had a dimmer go bad they sent me 4 dimmers and a box to enclose it in express 2 day delivery all no charge. You’re why I bought HLG. Hassle free customer service is understatement.
Thanks
Happy to hear you’re knocking things out, and hope this ends up being very successful grow!
These relatively cheap potentiometers aren’t very good. I think hlg is doing pretty reasonable job of managing the issues with them. I purchased a box of something like 20 of them from Amazon. 4 weren’t good coming out of box, and the resr have since failed or don’t measure within acceptable limits.
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