Cannabis Grow Room Ventilation Setup

How to Setup Ventilation System for Your Weed Grow

Ventilation is extremely critical in growing marijuana. If you overlook your marijuana plantation, it could quickly contact pests and pathogens if not adequately ventilated. Whether your grower’s space is enormous or limited, your cannabis plants need a proper ventilation system.

marijuana grow room ventilation

Your Grow Room Needs Air Circulation

The initiative behind ventilating a developed room is very straightforward. To thrive, cannabis plants need outside air. In this method, each area where marijuana is grown requires airflow. Airflow means fresh air reaching inside the grower’s room, while hot air moves out simultaneously.

Most of the growers misunderstood ventilation and experienced a wide range of problems. Bugs, parasites, and pests prefer a warm and damp environment with poor ventilation; you don’t want those creatures lurking in your growing space. Like it or not, ventilation is essential if you want a high yield of marijuana.

When you have an outdoor marijuana plantation, the natural breeze enables cannabis plants to grow well and compact. This kind of breeze strengthens stems and helps marijuana leaves flourish. For an indoor marijuana plantation, you should regulate the wind stream and generate an artificial airflow. Below are the steps to be considered while growing your cannabis indoors.

Tips on Ventilating a Grower’s Tent

Most home cultivators develop marijuana in growers’ tents. Ensure you have an excellent ventilation plan before you start growing marijuana indoors. The livewire will determine if you will get potent and high-yield cannabis. The best ventilation plan to still use depends on the space and light used in your grower’s room.

An intake fan, exhaust fan, ducting, and duct tape are the four essential tools in your grower’s room. You should use cables or wires to hang your fan onto the top of the roof for proper ventilation. You will also need a hole at the top of the roof, which serves as a medium where stale air vacates the grower’s room.

Indoor growers have opportunities to determine the variables associated with marijuana growth. The growth rate and health of marijuana can be conveniently identified by room growers.

A grower’s room must have space where the air can come in and out when there is stale air or improper ventilation, hence, it will be challenging to keep a healthy garden alongside many other issues growers are facing. Most grow rooms suffering from a ventilation shortage usually go through an outbreak of pests, molds, and other insects.

Though there are simple devices that help to determine how air is distributed in the room, it is essential to manage carbon dioxide depletion. The adverse effects can endanger your harvest. Inflow and exhaust systems, oscillating fans, and varieties of filters are some of the simple tools you can use in your grower’s room. The combination of these simple yet helpful tools will help produce a free flow of breeze in the room regardless of the room size.

Why is the Circulation of Air Essential for Marijuana?

Slight changes in climate can easily affect marijuana.

If there is no adequate ventilation, a drastic increase in humidity will occur. An environment with high humidity will experience an increase of pests, lack of ventilation also leads to a reduction in carbon iv oxide, which can further lead to a deficiency of growth nutrients.

Some of the Ways to Solve This Ventilation Issue Are

  1. Create sufficient airflow in the grow room; if this is done, you can regulate the humidity, air temperature, and carbon iv oxide in the room.
  2. Use simple tools that can create artificial ventilation for your marijuana. E.g., fans.

Where and How to Place Your Fans in the Grower’s Room

You don’t need to be skilled or to break the bank to set up fans for your grower’s room, but there are guidelines to follow. Clip-on fans should be used on walls, corners of the room, beams, or any grower room that is not big.

For a relatively big grow room, big floor models or functional oscillating fans are recommended, with the use of these fans, everywhere in the room can be ventilated. While simultaneously doing all these, make sure you have an exhaust at the top of the room where warm or stale air in the room leaves.

It is also advisable to place fans directly to the marijuana plants; this can be accomplished if you have a number of fans that can serve the room or oscillating fans.

Marijuana plant deformation occurs when fans blow directly on the canopy/tent; this leads to windburn and later causes leaves to wither or shrink. The best way to ventilate your plant is to place the fan(s) at the top and beneath the plant, then create an exhaust for stale air.

Best Methods of Installing Air Exhaust

Air exhaust is also very significant in grow room ventilation. Exhaust air passes out hot air and usher fresh/cold air into the grow room.

The primary tools needed for exhaust are the filter, exhaust fan, ducting that leads airflow out of the room, and there should be circulation of air in and out of the room once every fifty seconds as recommended.

Circulating Costs of Exhaust System

Exhaust airflow calculation is the primary requirement you need if you want to get the perfect exhaust for your grow room. They are calculated in cubic feet per minute, while in some countries, exhaust air is calculated in cubic meters per minute.

Multiplication is the best way to determine the actual exhaust fan required in an indoor marijuana plantation.

Your grow room height x grow room length x grow room width, and this will provide you the amount of air needed in your grow room. Any figure you get from this calculation will guide you on what type of exhaust to purchase. For instance, if you have a grow room of 4 x 4x 8, the air volume you need will be 128 cubic feet.

The Grow Room Air Circulation and Temperature

There’s a relationship between temperature and the air of plants, below are details regarding this. 

1) You need a Thermometer; Thermometer is required in a room to identify the exact temperature of the grower’s room. To get the best result, an extractor fan and a circulator fan are necessary. An extractor is needed to draw out the air from the room and replenish it with fresh air.

While the circulatory fan is required to circulate the air in the grower’s room. Exhaust fans are recommended if you want to start a grower’s place, you should have an exhaust fan with either of these sizes 4′, 6′ or 8′. Skilled growers agree that there should be an exhaust fan for every foot.

If you have a big space, then you should plan to have an exhaust fan with large cubic feet per minute performance. While the thermometer is needed in all there is, it helps you to know the temperature of your grower’s room, the amount of stale/hot air in circulation, then it aids you to take necessary actions.

Learn more: Growing Room Temperature & Humidity Guide

2) Having an extra oscillatory fan is an asset. Your marijuana plants will enjoy high yield if you make provision for ventilation even though they’re still in the growing season.

air fan for cannabis growing

Passive vs. Active Inflow

Investing in fans can be capital intensive for beginners; anyone that is having financial difficulties investing in fans and other ventilation tools should try passive inflow. Before you can start this in your grow room, you must have an access point or a port. The job of the port is to permit natural fresh air to enter the grow room while you still need to get an exhaust fan to draw out stale or hot air.

It is advisable to have a more significant inflow port to prevent the exhaust fan from overworking. This method is best for small grow rooms because they produce less heat compared to large rooms. Whatever way you wish to follow in your grow room, guarantee that there’s a free flow of air. It lessens environmental marijuana diseases and gives you a high yield during harvest.

Carbon Filter/Fan Positioning

The highest point in the room is still the best place to position an extractor fan, while some growers prefer to place it outside the canopy or tent. It is recommendable to put your extractor fan at the highest point because stale or hot air usually rises up to the roof of the tent.

Moreover, positioning your extractor fan directly opposite to the other extractor fan is also good. The stale air produced in the room is directly taken away through the exhaust fan; this helps in quick replacement and free flow of fresh air in the grow room.

Two Types of Carbon Filters

  1. Sucking Filter: Carbon filters are positioned at the base horizontally or at the roof of the tent. Take your extractor, then fix ducting to the carbon filter, it usually helps to get rid of stale air out of the grow room. You also need to reduce noise and friction while dealing with ducting by making it short and to prevent bends.
  2. Blowing Filter: This is the least popular method, if you are combining fans and filters as exhaust, then you need to set the filter outside the grow room. For this method, you need an extractor to suck the filter; this will help to blow/absorb dust or other particles accumulated during the process.

On the final note, having a free flow of air in the grow room cannot be overemphasized. It gives a healthy stem, high yield, and potent marijuana. Ensure you always conceal the smell of the carbon filter.

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