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air purifier weed grow

Air purifier weed grow

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

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


We all know that skunky, sweet aroma of cannabis. It’s pretty much characteristic of marijuana! But, you mustn’t forget that there are regulations here and there, so you can’t just let your grow operations vent untreated air.

Ventilation will emit clouds of untreated air, but without it, the greenhouses would get too hot and humid, leading to pests, mold, and diseases.

However, this doesn’t mean that home growers are exempt from this preoccupation. A home grower often wants to keep his operation discrete, so the first step is reducing odors.

Air purifier weed grow

Some air purifiers on the market are simply HEPA filters equipped with a low-powered fan. This type of air purifier would be ok for an indoor garden the size of a closet. A gardener who is considering using one of these filters in a larger space would probably be better off opting for an inline fan and HEPA filter combo.

Since the spores of these fungi are invisible to the naked eye they are often overlooked by new indoor horticulturists. If a crop contracts one of these destructive fungi, it takes serious work to eradicate the issue entirely. As with most problems in an indoor garden, prevention is key.

A lot of the pathogenic molds and fungi that can infect an indoor garden are transmitted through the air. A few examples of destructive fungi that are transmitted through the air are powdery mildew, black spots and botrytis. When given the right conditions, these opportunist fungi quickly cause problems to otherwise healthy plants and can destroy an entire crop in a short period of time.

Intake filters are important preventive tools that just about every indoor gardener should have included in his or her ventilation system. Intake filters can vary greatly, but they all have a common goal: to allow maximum airflow while still effectively filtering as much as possible. Perhaps the best examples of this are high-efficiency particulate air (HEPA) filters. HEPA filters are able to remove particles in the air down to .3 microns in size. Many mold spores fall in the 1-20 micron size, which means HEPA filters are a good choice for preventative protection against mold spores.

HEPA Air Purifiers

Once a horticulturist understands the importance of maintaining a high air quality in the garden, he or she will take the necessary precautions to purify the air. Indoor gardeners who implement air purification devices and techniques will decrease the likelihood of pathogens, pollens and VOCs found in the air and automatically create a better environment for the plants.

Stand-alone filters are filters (combined with a fan) that are used within the garden space. The purpose of a stand-alone filter is to continuously recirculate the air within the garden space and filter it in the process. The type of filters most commonly used for this application are carbon filters. Implementing a stand-alone filter is not only a great way to reduce or eliminate odors, but it will also help to reduce the likelihood of mold problems.

Even on “closed” air-cooled systems, intake filters can greatly help a garden’s performance. Although air filtration is not really considered a lighting issue, it can affect the lighting system in an indoor garden. When dirt and dust settle on the reflector’s glass, it significantly reduces the efficiency of the lighting system. If a grower filters the air before it enters the air-cooling system, they can greatly reduce the sediment build-up on the reflectors and keep the light levels as high as possible.


There are many different air purification devices available, each with its own advantages and disadvantages. Three of the most common devices used for maintaining air quality in the garden are intake filters, stand-alone filters and air purifiers.

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.