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growing weed without carbon filter

Growing weed without carbon filter

This simple diagram shows how many growers set up up their exhaust system

A carbon scrubber can completely hide the smell of growing cannabis plants, even really smelly ones!

A carbon filter is usually shaped like an enormous tube, and they're usually pretty heavy. The way they work is they are filled with carbon inside. When air passes through the carbon it neutralizes any smells, and when the air is passed out the back it is completely odor-free. However, for a carbon scrubber to work the air needs to be pulled through the filter, which is usually done using a strong exhaust fan.

Carbon Filter > Grow Light > Exhaust Fan > Outside

No air leaks in your exhaust system! It's important that the only way air can enter the system is through the carbon filter, and that air should go straight outside. If there are leaks in the ducting or around the grow light, then smelly air can escape that way instead of passing through the carbon filter first.

The exhaust fan needs to be strong enough to create a vacuum in the grow space (in a grow tent you'll see the side bowing in). That means that all the smelly air is getting vented out the tent so fast that the suction prevents any from going back into your room. Even without a carbon filter, if you have good suction you won't smell anything outside the tent!

1.) To Prevent Smells From Leaking into the Grow Room

This is the most common way to set up a carbon filter:

This is an example of a carbon filter in action

If your growing in an apartment, a carbon filter is a must. Even if your in a legal state and have a legal plant count why have the police stop by. Here in Colorado, they just search the house for your headstash. They don’t spend any time in the actual grow room. They are expensive but if your in a legal state you can get them super cheap off Craigslist although you’ll never know how long it’s been ran.

PS do not use scented stuff to mask it, your herb will taste like spring meadows or ocean breeze or whatever.

Honestly stinking up your whole floor would be dick move. Your neighbors will be smelling that shit from their couches every night.

Well-Known Member

You want to know what it will smell like? Leave a few ounces laying around in your living room for the entire day. it will probably smell worse.

Even during veg with 24/0 and only a couple plants without a scrubber running the smell from a basement travels. when you have half a pound of wet bud stinking up the air.. forget about it!

Chip Green

I had 2 autos in a grow box that had pc fans and a bit of carbon from a fish aquarium. I knew it was smelly when i could smell it when i turned on to my street.

For 4 auto plants do i really need a carbon filter? I haven’t been in a growing place before, so i can’t imagine the odour production of plants.

As stated earlier, activated carbon is made to have more holes than regular carbon, which means that it absorbs smells better and able to filter out more pollutants than standard carbon. Charcoal has been used for centuries as a filter. In fact, gas masks in World War I even used carbon filters. So, if activated carbon filters can protect soldiers from mustard gas or another chemical, it sure can work as an effective odor neutralizer.

If you know what a sponge does, you will know the theory behind a carbon filter. The carbon filters simply capture, like a sponge, various containments and stop them from going outside the tent; also it prevents bad air from getting inside your grow room. In the case of a weed, the pollutants are terpenes.

Per the EPA, no. The EPA states that ozone levels that do not exceed the listed safe levels will not scrub out of eliminating any indoor air pollutants. Obviously, ozone generators are only designed to produce safe levels of gas. So, based upon the EPA, the only way it would be effective would be if it generated unsafe levels of ozone.

The CFM size that you need depends upon the size of your grow room. So, more CFM is not necessarily better. Check this article out for a guideline on what CFM size you should purchase.

Final Thoughts

Activated carbon or charcoal filter is made from burnt wood or even coconut shells that are burnt at temperatures exceeding 400 degrees. Afterward, it is cooked again at over 800 degrees. (They are also treated with a substance that makes the carbon have even more holes than non-treated charcoal)

A suitable ventilation system consists of both a circulating and inline fan. Both those combined allow the air to circulate, which in turn means that the filter can do its work.

CFM or cubic feet per minute is the standard that you should look for when it comes to air filters. CFM indicates how many cubic feet per minute a carbon scrubber can filter.

How Can You Gauge The Efficiency Of A Carbon Filtering System?

The vast majority of all C02 filters use activated carbon (AKA “activated charcoal”) for their filtration or scrubbing. Activated carbon is specially manufactured to have tiny holes or pores, which results in more holes per filter. In short, more holes on a filter equals better filtration.

Ozone generators are marketed as an air, quality, control device. Some of the manufacturers claim that they will help with both air quality and also help control smells. The question though, is do they work, and if so, to what extent should you use them in your grow room or grow tent ?