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3 Tips to mask the smell of your grow room.

Marijuana has one of the most pungent and recognizable odours of the plant kingdom. And it is this very smell that draws many users to it, as the smell can often indicate a plant’s strength, or just be intoxicating all on its own. There’s no doubt that as some time or another, you have smelled that same odour while out walking or attending an event, even if you couldn’t exactly place where it was coming from.

In these cases, there’s a chance that the smell was coming from someone’s nearby grow room. So while you could smell it, you couldn’t see it. This is a situation you, as a grower, never want to find yourself in because if other people can smell it, the chances are good that so can nosy neighbors and law enforcement officials. And when this is the case, they often won’t stop looking until they’ve found the source and eliminated it. And depending on where you are in the world and how much you’re growing, this could spell trouble.

If you haven’t yet taken some odour control measures in your grow space, here are the three methods that are most effective – as well as a few that you should always avoid at all costs.

Choose Low Odour Marijuana Strains

The first step in controlling the odour in your grow room is to minimize the odour as much as possible before the plants are even close to blue-mysticreaching full maturity. This can be done by choosing low-odour marijuana strains. While there are many out there, here are a few strains known for not being extremely smelly during their growth phase.

  • Blue Mystic. This is a strain that will have a very low odour while it’s in the vegetative stage, but it will become slightly stronger during the flowering cycle. Once it has been properly dried and cured though, it will still have a distinctively pleasant odour that connoisseurs will recognize almost instantly.
  • Lowryder is known for its incredibly mellow smell, even once it’s smoked. Phenotypes such as Lowryder 2 will still have a relatively low odour, but they are typically a bit stronger than the original.
  • Northern Lights. This is a strain that was bred to be grown indoors, and with indoor growers in mind. It’s known as one of the least smelly plants any grower could grow, but gives users a nice couch lock punch once consumed.
  • Durban Poison. Durban Poison isn’t just a low-odour strain, it also gives off some of the biggest and densest buds that both growers and users will enjoy immensely!

When not growing these strains (and sometimes even while growing them depending on the conditions and phenotypes,) there are still other odour control measures growers can take advantage of.

Carbon Filters

el-filtro-de-carbon-vegetal-debe-estar-conectado-al-extractor-de-aire1Carbon filters are the odour control method that seasoned growers choose the most often. These can be used in large and small grow spaces alike and are attached directly to the room’s exhaust system. As the fan pulls in the hot or stale air from the grow space, it will pass through the carbon filter. The filter contains activated carbon, a substance that is known for eliminating odours in any situation. As the air passes through the carbon it will essentially be scrubbed, which is why another term given to these devices is carbon scrubbers.

The fan that is used to pull the air from the room can either be separate from the filter, or it can be included as part of the filter. In either case, it should have a CFM rating stamped onto the body of the fan. This rating is important as it will let you know whether or not the filter has a rating equal or lesser than the fan’s. If the fan is not powerful enough, it will not be able to take in the needed amount of air, and therefore odour, to be scrubbed. Both the fan and the filter also need to have the same diameter as the duct. This will make sure both pieces fit into the duct and that the entire system is airtight, making sure no odour leaks during the process.

To install the carbon filter, the filter needs to be attached to the fan’s intake using either a clamp that will ensure it’s airtight, or even duct tape (just make sure it’s metallic so it doesn’t melt or come loose with the system’s heat.) The filter and fan need to then both be hung from the ceiling, which can be done using simple hanging fixtures. The fan and filter can then be raised so they’re out of the way, but in most cases they should both be fairly parallel to the ceiling. The fan’s exhaust then just needs to be connected to the duct. In cases of emergency, or when you don’t have a large grow room that requires and extensive exhaust system, a carbon filter can simply be placed on top of an exhaust fan. This can clear the room of odour in just a few hours.

Any way you choose to attach your carbon filter, it’s important that you keep it running 24 hours a day. Remember, a carbon filter that’s not running is useless and won’t do anything to control odour in the room; and marijuana gives off odour every minute of every day. Humidity can also interfere with not only the growth of your plants, but also the carbon filter you’re using. Because of this, it’s important to regulate the humidity in the grow space at all times. Carbon filters also come equipped with actual filters that lose their effectiveness over time. To ensure your filter is continually doing its best possible job, it’s important to replace the filter every 9 to 12 months.

Odour Neutralizers

Odour neutralizers do the same job as carbon filters, but in a much simpler way. They don’t mask or cover up the smell; they simply absorb it and neutralize it. Ona Pro Gel is the most popular product on the market when it comes to odour neutralizers and it’s also the easiest to use. With Ona Pro Gel, the top simply needs to be removed and the jar needs to be placed just outside of the grow room. As smells escape from the room, the neutralizer will grab it and take the smell away. Ona Pro Gel is so effective, it was originally designed to help with the odour let off by sewage treatment facilities. Because they don’t involve an entire exhaust system, these are especially good for small grow spaces. In fact, if the grow space is very large, these neutralizers may not be enough effective in absorbing the smell of many plants.

Just like carbon filters, odour neutralizers need to be replaced often; even more so than carbon filters. One jar typically lasts from four to six weeks. Unlike carbon filters, these cannot be placed in the same area as the plants. If they are, they can alter the smell and appearance of the plants, which is something no grower wants. While there are many products that can be used to help control the odour in a grow room, there are even more that should never be used. These include anything such as candles or incense, as these can pose a fire hazard, especially when they’re around plants that can sprawl out and make their way into the flame.

never-febreeze-cannabisAir fresheners should also never be used. Not only are these just as ineffective as candles and incense, they also release harsh chemicals that will get onto the plants during their growth. These could alternate the taste and look of the plants, and could also be harmful to anyone that smokes or otherwise consumes them.

Ozone generators are devices that emit ozone, thereby reducing and neutralizing the smell in a grow room. However, these should be avoided at all costs. When ozone is emitted into the air, anyone around them is also going to inhale that ozone, which can be very damaging to the lungs. Like the chemicals of air fresheners, ozone can also make its way onto the plants, which is also dangerous when the plant is then consumed.

The safest and most effective ways in controlling odour in your grow room include choosing a low-odour marijuana strain, and then using a carbon filter or odour neutralizer. These methods are the only way to keep you, and your plants, safe.

MSNL Team MSNL Team / 20th July 2017

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