Blue Mystic Northern Lights Papaya Durban Poison Shark’s Breath Polar Express[1] X Research source [2] X Research source
Ona Pro Gel, which was developed for sewage treatment facilities, is one commonly recommended neutralizer. Simply place an open jar in the space adjacent to the grow. That’s all it takes to minimize the smells in your living area. Replace the neutralizer regularly. One jar should last about four to six weeks, so mark your calendar and keep track of when you need a new one. Do not use an odor neutralizer in the same space as your plants. Neutralizers have been known to alter or reduce the smell of the marijuana plants themselves, so keep them clear of the grow room. [3] X Research source Neutralizers work for small gardens only. While they may be perfectly fine for a few plants, they are probably not up to the challenge of larger enterprises. [4] X Research source [5] X Research source
If used in the vicinity of your garden, they could adversely affect the smell of the plants themselves. What’s worse, air fresheners often contain harmful chemicals. They’re best avoided. [6] X Research source
There are two types of carbon filter, granular and block. Block is generally more effective, with a larger carbon surface area and greater density for slower, more thorough filtration. [10] X Research source Granular filters may be effective for small cultivation areas. [11] X Research source Choose the filter size according to the amount of air you need to evacuate, measured in cubic feet per minute (CFM). The intake fan in your exhaust system should have a CFM rating stamped on the body of the fan. Make sure the filter has a rating equal to or lesser than the fan’s to ensure the fan is powerful enough to move the air through the filter. Likewise, both devices should have the same duct diameter (6 inches is standard, but check just in case). [12] X Research source If you do not have a fan already, you may opt to purchase one separately, or as part of a fan-filter combination.
Connect the filter to the fan’s intake side using an airtight clamp. Alternatively, you can use metallic duct tape for this step. Wrap fixture hangers around the filter and fan, and hang them from the ceiling using two hooks. Raise the system by pulling on the cords. Try to position the filter and fan in line with the ducting, which should be more or less parallel to the ceiling and pass into the wall. Attach the fan’s exhaust end to the duct. Some people find it more effective to install the carbon filter at the opposite end of the exhaust system to the fan. In this case, attach the filter to ducting at the end or back of the system. Rig to the ceiling using the fixture hangers as described above. [13] X Research source
To help regulate conditions in your grow room at all times, consider connecting the extraction fan to a fan-speed controller that also measures humidity and carbon dioxide levels.
