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air purifier weed grow

Air purifier weed grow

Air purifiers are specific devices that recirculate the air within a garden and purify it. Most growers implement an air purifier in addition to an intake or stand-alone filter. The main purpose of an air purifier is to eliminate any mold spores, bacteria or VOCs floating around the garden space. An air purifier is a great addition to any indoor garden, however, not all air purifiers are the same.

Although not nearly as common as molds and fungi, airborne bacteria can also cause problems for certain indoor crops. Bacterial infections can cause a variety of symptoms, including blights, cankers, galls, leaf spots, overgrowths, specks, scabs or wilts. Bacterial infections are usually hard to identify and more often than not they are misdiagnosed as a nutrient deficiency. Eliminating airborne bacteria before they affect the plants is the only realistic defense.

The dreaded spider mite (arguably the most destructive pest insect for indoor horticulturists) creates a small strand of webbing that acts very much like a parachute, allowing it to relocate via the wind. Unsuspecting gardeners inadvertently introduce these monstrous pest insects into their growrooms through their ventilation systems. Again, prevention is the best defense against spider mites and other pest insects that can be introduced through the fresh air intake of a ventilation system.

Air Purifiers

Volatile organic compounds (VOCs) are chemical compounds (gases) found in the air. Indoor gardens can produce a variety of odors, from fertilizer smells to plant odors. These odors are all types of VOCs. Although most odors are more of a nuisance than a detriment, some VOCs, like the ones left behind by chemical insecticides or fungicides, can be dangerous. Air purification is the only way to eliminate VOCs and reduce odors in and around an indoor garden.

Another type of air purifier on the market are ozone-based air purifiers. These devices usually have a UV light to produce ozone and a fan to circulate the air. Ozone air purifiers should be considered carefully by most growers because they may produce detectable ozone within the garden space. Accumulated ozone in a garden space can damage plants and be harmful to humans.

Unwanted pollen in the air can cause problems for indoor horticulturists. Cross-contamination of species can ruin an entire crop, especially if the grower is attempting to perform controlled breeding. Some annual plants, such as peppers for example, can be cross-pollinated, which creates unstable offspring. For many seed producers, it is imperative to keep similar species’ pollen separate from each other to avoid cross-contamination.

Volatile Organic Compounds (VOCs) and Odors

Maintaining a high level of air quality is important when trying to provide plants with optimal growing conditions and also for preventing unwanted issues. Growers who invest in air filtration devices or air purification devices can rest assured that their gardens are protected from many of the unseen pathogens lurking in the air.

A ventilation system is a way to keep the garden cool and replenish the CO2 needed by the plants for photosynthesis. However, in addition to cooling and replenishing CO2, a ventilation system should also provide the proper filtration or purification measures needed to ensure good air quality.

Air purifier weed grow

These carbon filters are costly on large scale, but they’re perfectly alright for smaller environments.

Gels and oils are better in this department, and they’re limited to small, home growers, but if you use a quality gel, for example, you won’t have any problems.

These don’t eliminate the odor, they just cover it up. They’re similar to a car freshener.


The more humid the place, the worse its performance will be. This makes environmental control extremely important! See the filters you can here.

They are the go-to for home growers and smaller cannabis operations. They’re simple, effective, and reliable.

But how can you effectively control odors, cooling, and air circulation? Let’s check some of the best air purifiers to keep that air in check!

Generally, the more expensive ones outperform the cheaper ones by a large margin, but they do get pricey. If you’re a home grower concerned with air quality and the peace of your neighbors, investing in an expensive air purifier might be the best route if projected towards the long run. Such kind of the filters you can find here.

Air purifier weed grow

PreVent Air Intake Screens

Due to its strong musky skunk smell, cannabis odor elimination is a problem for indoor grow rooms. Almost all cites and areas have strict regulations regarding cannabis odors. In Denver, for example, the regulation is 1 part cannabis odor per 7 parts filtered air. Fortunately, adding activated carbon filters to a ventilation system is a relatively inexpensive way to ensure the removal of cannabis odor, as carbon can adsorb 1/3 of its own weight in odors. One trusted source of carbon filters comes from our subsidiary company, D-Mark ® . Their highly efficient carbon filters are unmatched for quality and are especially effective when used in conjunction with Permatron PreVent air intake filters. As Ronald Richmond of D-Mark, who has 30 years of experience in solving activated carbon applications, explains, “PreVent filters catch the particulate matter from outside air before it enters the ventilation system, and the activated carbon in D-Mark carbon filters catch the odor molecules before it exits back outdoors.”

That Stinks

Clearing the Air: PreVent®, Permatron and Cannabis Indoor Grow Rooms

Aurora Sun and other massive cannabis indoor grow rooms are usually located in rural areas and surrounded by nature. Their chillers and HVAC machines are outside, where they are constantly bombarded by inclement and unpredictable weather, insects, leaves, dust, garbage and whatever else is blowing in the wind (cottonwood seeds in particular are a big problem). These blow into air intake openings, block the ventilation, dirty the coils and damage the machines. To keep HVAC systems in good working order, time-consuming and costly cleanings need to be performed frequently— sometimes weekly. That’s where air intake filter screens like PreVent air intake filter screens come in. PreVent air intake filter screens are individually customized to fit over any size air intake opening and secured in place with mount clips that hold HailStop hail guard netting underneath the PreVent intake screens. Additional mount options include our patented MagnaMount ® earth magnet fasteners, allowing for quicker installation and removal of PreVent alone. Not that you need to remove the filter screens often: PreVent air intake filter screens can be simply brushed clean, in place.

The Aurora Sun

Another HVAC-related concern in maintaining indoor grow rooms is the cost of energy. One expert estimates that a typical grow operation uses up to 20X more energy per square foot as the typical office building. In Denver, one of the first cities to legalize marijuana, nearly 4% of the city’s power is used to grow marijuana. Dirty HVAC coils leads to HVAC inefficiency and dramatically higher energy costs: an EPA study showed that as little as 0.042″ of dirt on condensing coils can cause a 21% drop in efficiency, and can increase refrigeration energy use by 35%.

There’s one more challenge facing operators of indoor grow rooms, too. After all, we can’t discuss cannabis air quality without mentioning its odor …