How to Make a Carbon Filter for A Grow Room?

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How to Make a Carbon Filter for A Grow Room

You can easily make a carbon filter with locally available materials. You don’t need to incur many costs buying a carbon filter that would give you the same performance as a filter you would easily make. 

Getting materials to make a carbon filter is also easy. And without experience, you can follow simple steps and make it yourself. 

In this article, we will discuss simple steps that anyone can follow and make a carbon filter for their grow tents. 

But before we begin, let’s first understand key things about a carbon filter. Whether you choose to buy or make the carbon filter, these are essential things you need to know. This will help you get the best out of your grow room with a carbon filter

Is Carbon Filter Effective in their function?

You might be wondering whether it’s necessary to have a carbon filter in your grow room. If you are in this situation, the answer is simple. You need a carbon filter if you want to get the best out of your grow room. 

The main purpose of having a carbon filter is to control the odors in your grow tent. Whether you want to do away with bad odor or you don’t want people to be suspicious of anything you have planted in your grow room. 

So, if you are looking for a tool to control the smell and odor of your grow room, you need a carbon filter. When installed in your exhaust system, it neutralizes the air that passes through it. With them, they get rid of any strong smell coming from your grow room. 

So, whether its chemical odors or smell of a plant that you don’t want to be noticed by anyone around, a carbon filter will get the job done. 

How Carbon Filters Work

A carbon filter is activated carbon filled in a giant tube. When air from your grow room passes through it, carbon neutralizes it. It cleans and removes any odors before the air is pushed out of the carbon filter. How Carbon Filters Work

For the carbon filter to work properly on your grow room, its essential to ensure that the exhaust system is set correctly. Also, you will require an inline fan to push much air through the carbon filter. 

If these installation precautions are not taken into considerations, the air will escape through other parts of the grow room. And without a strong inline fan for your grow tent, then the whole carbon system will be useless. 

Installing a carbon filter is an easy task. If you can be confident enough, you can set it up correctly in your room. Also, you don’t need to buy a commercial carbon filter. You can easily make your carbon filter. 

Different Types of Carbon Filters

There are two categories of carbon filters you will find in the market – block and granular filters. Block filters are large. They handle filtration on large grow tents or cultivation areas. Their design enables them to filter large volumes of air at the same time. 

On the other hand, the granular filters work well with smaller growing areas. They can’t clean huge volumes of air at the same time. 

So, if you have to buy or make your carbon filter, choose one depending on your growing needs to purify the air. If your grow space is large, get a block filter. But if you have a smaller space, go for the granular block. 

The air cleaned by the carbon filter is measured in cubic feet per minute (CFM). 

If you choose to buy a carbon filter, it should have a CFM rating label on it. The CFM of your filter should be lower or equal to the CFM of your inline fan installed in your grow tent. This will ensure that the fan has the strength to move air through your carbon filter. 

Best Carbon Filter for Your Grow Tent

As we have already mentioned, there are two types of carbon filters. The best filter for your grow tent will depend on the size of your growing area. 

When these two filters are compared, they all function well. However, having a granular carbon filter on a large grow area will not filter your air as you would wish to. The vice versa is also true. 

Ensure you have a right carbon filter that matches the size of your grow tent. 

Buy or Make Your Carbon Filter?

Sometimes it’s confusing when it comes to carbon filters. You might not know what to do at first. Buying a ready grow tent filter might seem ideal. At the same time, making your carbon filter seems to be an easy task. 

So, what to do you choose? 

Personally, I recommend you to consider some factors before making the decision. Do you have time and confidence to build your carbon filter? If yes, go ahead and do it yourself. However, if your answer is a No, buy a ready carbon filter. 

But one thing is for sure. Building your carbon filter is easy. It also doesn’t take much time and resources. At a low cost, you will get a carbon filter that will function the same as a carbon filter that you could have bought. 

It will save you money. 

A good carbon filter costs around $100. But its nothing apart from activated charcoal sandwiched in between meshed metal or plastic sheets. 

Make Your Carbon Filter

How to Make a Carbon Filter for a Grow Room

In the following sections, we will discuss on how to make air carbon filters. These are filters that are specifically designed to purify the air from a grow tent. 

First, before you start doing the actual work, you need to understand the different parts of your air carbon filter. This will help you know which part will be essential and what you would require them for. 

Different Parts of an Effective Air Carbon Filter

Understanding the parts of the carbon filter will help you use the right material and procedures in constructing the carbon filter. 

  • The Air Passage

Air passage of a carbon filter is a cylindrical area between the filter openings. You can make the air passage to be anything from 4 inches to 8 inches. The openings should be of the same diameter as the inline fan and ducting. 

This will ensure that the inline fan and ducting system will push the air from your to grow tent to the filter without any escaping. 

  • The Body

The air carbon filter body is a composition of activated charcoal, outer, and inner mesh. The body secures the filter and makes it a dust-free intake. It ensures that air passes from the pre-filter to the carbon layer without attracting any dust from the grow tent. 

  • Pre-filter

This is a breathable and a semi-transparent medium placed around the filter body. It gives minimal air resistance to the filter. As a result, it let’s air pass through the carbon bed for cleaning. 

The main purpose of having a pre-filter is to prevent debris and dust from entering into the activated carbon. 

  • Activated Carbon

This is the main part of a carbon filter. The activated charcoal draws unclean air and removes its odor. It takes away all smelly chemicals and releases fresh air outside the grow tent. 

Not every charcoal is effective in carbon filters — only the activated carbon. Normally, the 1050+ Australian Virgin Charcoal is considered the best-activated charcoal for the air carbon filter. 

Requirements for Making Your Carbon Filter

You will need the following key items to make a carbon filter for your grow tent. All of these items are available on Amazon. Buy them and make a carbon filter for yourself. 

Click on every item to check the latest price and buy it from Amazon. Most of these items you will use them next time you will be making another carbon. You can also use some of them in other functions. In short, there is no loss when you buy any of these items from Amazon. 

The procedure for Making a Carbon Filter for a Grow Room

This is the procedure for making a carbon filter for a 6-inch ducting system. The same procedure should also be applied in making a 4”, 8” or any other diameter you would wish to. The only difference will be the mesh pencil holder sizes. Choose the ones that fit exactly to the size of the dimension you would like to make. 

Once you decide your diameter size depending on your ducting system, follow the steps below to make the carbon filter on your own. 

Step 1: Set Up the Two Pencil Holders

This is the most important step in making the filter. The sizes of the two pencils should complement each other. 

Ensure that their diameter and height are the same. The diameter of the pencil holders should be the same as the diameter of your ducting system. However, the two pencils should be prepared in a way that you can put a smaller pencil holder to the bigger one. 

The height of the smaller holder should be ¾ of the bigger cup’s height. Its diameter should also be smaller than the diameter of the bigger pencil holder. 

Step 2: Drill Holes

The cups should be permeable from all sides. To ensure that, drill small holes on the bottom side of each cup. Drill the holes, depending on the size of the pencil holder. 

Technically, the bigger holder should have more holes than the smaller cup. 

Be also careful when drilling your cups, especially if your cup is made of delicate material such as aluminum material. 

Step 3: Put Socks on Both Cups

Take one sock for each cup. Put the socks from the bottom side of the cup. Once done, wrap it around it. Repeat the same procedure with the other cup. 

Step 4: Fill the Activated Carbon

Fill the activated carbon at the bottom of the larger cup. Fill up to the half of its length. 

Before you fill the cups, granulate your charcoal to small uniform sizes. Remove any large size charcoal that could be left in the granulated carbon. 

However, when making a carbon filter for a large grow tent, don’t granulate the carbon to very small sizes. However, the cups should be large enough to accommodate a high volume of airflow. 

Step 5: Seal the Activated Carbon

Put the small cup inside the large cup. Ensure it seals the bottom of the large cup where you have filled with activated carbon. Then pull the socks off the outer cup to cover the body of the small cup. The small cup will be longer than the larger cup. 

Hold the cup securely and make an even of both cups. 

As you tie, the activated charcoal will fill the space between the two cups. Push the small cup down until it of the same height with the larger cup. 

In the end, fill the space left between the cups with activated charcoal. The last thing to do will be to put the cups in an upright position. Ensure you adjust them necessarily. The openings of both cups should be on the same level. 

Pull the socks of the inner cup and tighten it around the outer cup. Ensure you do it evenly when pulling the socks. 

Step 6: Attach the Carbon Filter to Your 6” Fan or Ducting

By this stage, you already have an effective carbon filter. The only thing that you need to do now is to place it over the fan or ducting system of your grow tent. 

The connection should be strong and tight. There should be no air gap left. 

Making a Bigger Carbon Filter for a Grow Room

When making different sizes of a carbon filter, you will need different materials. However, the steps are the same. 

If you wish to have a large size filter, you need large pencil holders and large particles of activated carbon. And when your focus is making a smaller filter, you need to ensure the materials and carbon particles are small. 

The dimensions of your materials should be determined by your fan or ducting system installed in your grow room. 

  • You can use the following items. 
  • A PVC drain in place of a small pen cup
  • A mesh trash bin in place of a large pen cup
  • Polyester filter material instead of socks
  • Duct tape to hold the polyester filter media

Final Verdict

Having a carbon filter is important for your grow tent. The good thing is you don’t have to incur a lot of costs buying a filter. You can easily make one on yourself.

You can follow the steps we have discussed in this article to make your carbon filter. The most important thing is to make a filter with a diameter that is the same as the diameter of your ducting system or fan.