What is indoor growing?

Indoor cultivation is a method of growing plants indoors, artificially recreating the necessary conditions for plant growth to create optimal conditions for the plants.

Indoor cultivation involves controlling the environment and artificially generating light to mimic the sun; there are also mechanisms to regulate the temperature and humidity of this environment, keeping them within the optimal range for the plants, and the grower can adjust them according to their needs and the types of plants.

In this way, indoor cultivation offers numerous advantages, as it tends to yield better results in a completely controlled, protected environment free from external influences such as weather conditions, sudden temperature and humidity fluctuations, insects, and wildlife, which can cause incalculable damage to crops.

Outdoor cultivation is the growing method carried out "in the open air" and depends on weather conditions, seasons, rain, and other factors that influence plant development.

 

What is the difference between indoor and outdoor cultivation?

Indoor cultivation, as mentioned earlier, takes place in a controlled environment. Environmental factors are artificially generated to mimic the ideal conditions for plant development. This requires specialized equipment to guarantee these conditions. Consequently, indoor cultivation tends to be more costly than outdoor cultivation, but it usually delivers better results and crops of the highest quality. Since indoor plants grow under optimal conditions, they are free from external influences: they enjoy cleaner air, a better climate, and controlled lighting without disturbances.

These are crucial factors that lead to a superior harvest. Indoor blooms typically have a more intense aroma and higher final quality, as the plants do not suffer from rain, wind, or other uncertainties of outdoor cultivation.

What are the advantages of indoor cultivation?

Indoor cultivation offers numerous exclusive advantages, including:

• Optimal climatic conditions (ideal humidity and temperature)

• Lower risk of pests

• Highest final quality of the harvest

• 100% control over the climate

• Possibility of full automation

• Weather-independent irrigation (manual or automatic)

• Highest security and discretion

How to start with indoor cultivation

Indoor cultivation allows you to take full control over your plants' environment and can be an extremely rewarding hobby. Nevertheless, choosing the right equipment can be a hurdle for beginners. To start successfully, it is important to understand the following points to achieve excellent results later.

The health of your plants largely depends on air quality. Here's why your grow room needs optimal air circulation and ventilation:

1. Perfect CO2 levels: A correct ventilation system ensures fresh, CO2-rich air, while spent oxygen is removed.

2. Temperature and humidity control: Unlike outdoor plants, indoor plants are exposed to stagnant air and constant light heat. Good ventilation removes excess heat and humidity.

3. Stem strengthening: Air circulation simulates natural wind, which strengthens cell structure and ensures that plants grow upright and can bear heavy fruits.

4. Protection against pests and diseases: Diseases thrive in stagnant, humid air. Mold and mites have no chance in a dry and well-ventilated room.

Choosing the equipment

Here is an overview of the essential components for a successful Alpha Blunt system:

 

1. Grow tent 

2. LED grow lights (full spectrum)

3. Exhaust fan

4. Activated carbon filter (against odors)

5. Thermo-hygrometer

6. Circulation fans

7. Pots

8. Humidifier / Dehumidifier (optional)

9. Heating / Air conditioning (optional)

10. CO2 generator (optional)

11. PH / EC meters (essential for professionals)

At first glance, this may seem like a long list, but those just starting to grow can invest gradually. The equipment can grow with your plants and your experience. For example, points 7 to 12 are optional; you can omit them at the beginning, and it is absolutely possible to complete a full cycle (from seed to harvest) without these elements. However, for demanding and advanced growers, they are recommended as they further optimize ideal growing conditions.

Here is a brief summary of the most important components to familiarize beginners with their functions:

Grow Tent / Indoor Greenhouse

The grow tent is one of the most important components for indoor cultivation. It is especially crucial if you want to grow in an environment where other activities are taking place simultaneously. The tent isolates the growing environment, encloses the light, and allows precise climate control inside. It also prevents the ingress of dirt and protects the environment from humidity or water leaks, for example, during irrigation. Therefore, using a special tent offers numerous advantages for your indoor garden.

2. LED Grow Lights for Indoor Cultivation

Lighting is a crucial factor for indoor cultivation. Since there is no natural sunlight, without artificial light, there is no life, and your plants cannot develop – it is therefore the most important component of your setup.

Choosing high-quality lighting is fundamental, as it directly affects the yield and final quality of the harvest. You should choose an LED brand with an excellent reputation, proven results, and first-class quality. This way, you ensure that you can use the technology for many years and continuously achieve first-class harvests.

LED Lighting for Indoor Cultivation

It is now proven that LED technology is the best choice for indoor cultivation. The advantages are obvious: they are extremely energy-efficient, generate minimal heat in enclosed spaces, and deliver fantastic results. Today, there are many brands on the market, but MARS HYDRO and VIPARSPECTRA stand out and are globally recognized as leading names in LED grow lights.

When selecting your LED lighting, you must primarily consider the size of your grow space. For grow tents, you should purchase an LED that is precisely matched to the area of your tent. For example:

• Tent 80x80x160 cm: Choose an LED that covers an area of 80x80 cm.

• Tent 100x100x200 cm: Choose an LED that covers an area of 100x100 cm.

When planning in larger rooms or commercial areas, the logic remains the same. However, you should measure the net cultivation area and not the total area of the room, as you need space for handling plants as well as for other climate control devices and technical equipment.

We carry a wide selection of LED models in our shop, for both private and commercial cultivation. Visit our LEDS GROW category to find the right model for your needs. We offer you the best LEDs for your success!

3. Exhaust fan 

The exhaust fan is an essential component in indoor cultivation, as it is responsible for most of the ventilation in your setup. In a closed environment, it is the core of air exchange and ensures the necessary filtration. The exhaust fan's task is to remove stale air from the growing area and make room for fresh air.

For optimal efficiency, correct installation is crucial. There are various ways to configure the system, but we strongly recommend using the exhaust fan in combination with an activated carbon filter. In this duo, the fan not only filters the air but also reliably eliminates all odors from the environment.

There are different ways to install this ventilation system. Below, we show some common configurations using illustrations.

4.Filtro de carvão

 

4. Activated Carbon Filter

The activated carbon filter is an equally indispensable component, as it filters the air and removes impurities. It ensures a cleaner environment and reliably eliminates the smell of your grow – a crucial factor for growers who value discretion.

Inside these filters, high-quality activated carbon in the form of small particles (0.4 to 0.8 mm) is used. These bind odor molecules and filter particles from the air, neutralizing impurities and, most importantly, the characteristic aromas of the grow.

5. Thermo-hygrometer

 

5. Thermo-Hygrometer

The thermo-hygrometer is an indispensable measuring device for indoor cultivation. It is used to precisely monitor the temperature and humidity in your grow environment – two fundamental metrics for maintaining full climate control.

With this device, you can track the conditions in your growing area in real-time and make the necessary adjustments to achieve the ideal climatic range. You will use the other devices mentioned in this article for control.

6. Fans (Circulation Fans)

6. Circulation Fans

Fans in indoor cultivation are essential to ensure an optimal environment for your plants. By using fans, your plants benefit from numerous advantages:

• Air Circulation: They ensure even distribution of air throughout the growing area.

• Gas Exchange: Constant air movement supports the renewal of air layers directly on the leaves, which is crucial for gas exchange (photosynthesis).

• Structural Strengthening: Fans simulate natural wind. This encourages plants to develop stronger stems and branches, stabilizing the entire structure.

• Prevention: They eliminate stagnant air and moisture build-up, minimizing the risk of mold and creating a healthy growing environment.

7. Pots

 

7. Pots

The pot is an indispensable element – without it, indoor cultivation is simply not possible. High-quality pots are characterized by robust material and practical handles that make it easier to move and handle your plants. When choosing, you should definitely pay attention to quality, as inferior, fragile pots can hinder root development.

The currently best options on the market are fabric pots (felt pots). These allow optimal oxygen supply through the side walls, which massively promotes root growth. In addition, they convince with their excellent quality and long service life.

8. Humidifier

8. Humidifier

This device is extremely useful and is particularly recommended for growers living in dry regions with low relative humidity. The main function of the humidifier is to increase and maintain humidity within the ideal range to prevent stress for the plants and create optimal conditions for indoor cultivation.

However, a humidifier is not only essential for dry regions; it is advisable for all growers, as humidity can fluctuate greatly depending on the season. For maximum precision, you can integrate the device into an automation system. This way, the humidifier automatically turns on as soon as the environment becomes too dry. You can find more information about these automation solutions later in this article.

9. Dehumidifier

 

9. Dehumidifier

The dehumidifier is an indispensable device for growers striving for the highest excellence. It significantly optimizes the climate in the cultivation area and prevents serious problems caused by excessive humidity – especially during the crucial flowering phase. High humidity levels can lead to massive complications such as pest infestations and mold formation on the flowers.

This device gives you full control over humidity, which is particularly important if you live in humid, rainy regions or areas with strong climatic fluctuations. In more compact environments such as grow rooms or tents, this equipment is highly recommended. In the context of indoor cultivation, after intensive watering, water evaporates from the pots and plants, causing the humidity to rise drastically in the first few hours and especially at night when the lights are off. Here, the dehumidifier helps to keep the values stable and proves to be a necessary tool for successful cultivation.

10. Heater

10. Heater

The heater is an essential component if cultivation takes place in a cold region or in areas with strong temperature fluctuations. It keeps the temperature in an ideal range so that the plants do not suffer stress that could hinder their development. With a heater, you can specifically increase the temperature on cold days and thus avoid problems.

This applies in particular to seeds and young plants, which are extremely sensitive to cold and can literally die on very cold days. A heater is the best prevention here to ensure the vitality of your garden.

11. Air conditioning

11. Air conditioning

Similar to the heater, the air conditioner helps to maintain a mild and pleasant temperature for the plants. On extremely hot days, excessively high heat stress can significantly harm plants and cause numerous problems. As a rule, air conditioning is one of the most expensive components of a setup and can be costly in terms of energy consumption.

However, for advanced growers, such a device is often the ultimate solution ("mão na roda" - an enormous relief). Many modern models not only have a cooling function but can also heat and dehumidify the environment, which can make the purchase of separate devices superfluous. In addition, some devices offer automatic functions that independently maintain the climate in the ideal range. Without a doubt, air conditioning is one of the best tools for indoor cultivation and should not be underestimated by demanding growers striving for excellence.

12. CO2 Generator

12. CO2 Generator

CO2 (carbon dioxide) is essential for photosynthesis. In this process, plants convert CO2 into oxygen, which is central to healthy development in indoor cultivation. It is important that there is continuous air exchange in your setup so that fresh CO2 is always available to the plants. In closed environments, it is fundamental to consider this aspect in planning.

Today, there are various models of CO2 generators on the market – from heavy pressurized gas tanks to practical CO2 bags like the Green Pads. The latter are particularly user-friendly and easy to handle, while tanks require a deeper technical understanding for control and application.

13. pH and EC meters

13. pH and EC meters

Measuring devices are extremely helpful for checking nutrient solutions and ensuring that pH and EC values are within the correct range. They enable precise control of these parameters, which directly affects the nutrient uptake of the plants and thus the yield. By measuring, the grower can determine whether the pH value, for example, is too high or too low, and adjust it precisely to the needs of the plant with pH-UP or pH-DOWN solutions (agents for raising or lowering the pH value). The same applies to the EC value (conductivity).

While these measuring devices are very useful, they are not absolutely essential in all cases. Today there are cultivation methods that do not require manual pH measurement – for example, when using the SENSI line from Advanced Nutrients. These fertilizers automatically regulate the pH value of the solution to the ideal range, suitable for the respective development stage of the plant.

Automating the Indoor Grow Environment

Automating the Indoor Grow Environment

For your plants to always grow healthy, splendid, and strong, the environment must be optimally adapted to their needs. Only then can truly successful harvests be achieved at the end of the cycle.

We know that climate control – whether due to external weather influences or internal factors – often presents a challenge. One of the most efficient solutions is automation. By automating your setup, the climate devices operate autonomously and regulate the conditions independently as needed. This way, your garden always stays in the ideal range, suitable for the respective life cycle of the plants.

We offer a range of highly modern automation solutions:

Mars Hydro iHub Smart Power Strip

The iHub from Mars Hydro is a groundbreaking device for automating your indoor cultivation. With this smart power strip, you can control multiple devices simultaneously and manage them via an app (via WLAN and Bluetooth). An integrated sensor precisely records the temperature and humidity of your environment.

• App control and data access: Use the Mars Hydro App to monitor climate data and energy consumption in real time. Set timers and receive notifications – all conveniently via remote access. Analyze hourly, daily, or monthly data to understand fluctuations and make informed adjustments instead of relying on assumptions.

• Intelligent climate control: The iHub is equipped with sensors that record the climate (temperature and humidity). Once you have defined your target values in the app, the system takes over control. The selected devices switch on or off automatically to ensure the ideal environment for worry-free cultivation.

We recommend this system to all growers who rely on state-of-the-art technology and strive for maximum control with minimal effort. Discover our other automation solutions in the corresponding section on the Alpha Blunt Website.

We offer a variety of complete sets in our shop that are equipped with the best devices on the market. These sets consist of the highest quality components to guarantee you lush harvests. They contain everything you need to successfully cultivate from start to finish and achieve spectacular results!

Our sets already include lighting from Mars Hydro and Viparspectra – the world's leading LED brands. In addition, there are grow tents from Garden High Pro, a renowned brand in the industry, as well as all accessories such as activated carbon filters, exhaust fans, circulation fans, and fabric pots (felt pots), which are currently considered the best choice for indoor cultivation.

Secure your set now at ALPHA BLUNT and achieve fantastic results in your indoor cultivation!