GrowControl GrowBase – Digital climate controller for professional grow box and greenhouse control
The GrowControl GrowBase is the central control unit for anyone who doesn't want to leave their grow room climate to chance. The digital climate controller for grow boxes and indoor greenhouses reliably regulates temperature, humidity, CO₂ levels, and negative pressure, controlling AC and EC fans, lighting, and other consumers. This way, you create stable conditions, reduce fluctuations, and get more out of light, fertilizer, and genetics.
Instead of wiring multiple individual devices, the GrowBase bundles complete climate control for indoor growing into one compact, robust controller – developed and manufactured in Germany. Ideal for ambitious home growers, CSC rooms, and professional grow rooms where reliable, reproducible results are required.
What the GrowBase handles in your grow room
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Temperature control: keeps the room temperature constant within the set target range.
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Humidity control: regulates exhaust air and other devices so that VPD and humidity match the growth phase.
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CO₂ control: optional CO₂ sensor and valve/regulator ensure constant CO₂ levels in the grow room.
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Negative pressure control: controls intake and exhaust air to create even negative pressure – odors remain in the tent or room.
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Light dimming: 0–10 V / 1–10 V dimming signal for compatible LED and ballasts, including sunrise and sunset.
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Timer functions: daily timer, interval, and event timers for fans, irrigation, humidifiers, and more.
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USB interface: firmware updateable via USB, so you benefit from new features.
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DC output (MOSFET): for controlling relays or contactors, e.g., for larger loads or special devices.
Functions & technical highlights of the GrowBase climate controller
The GrowBase was developed as an all-round climate control for modern indoor setups. You connect sensors and devices directly to the controller and set in the menu how your system should react. Some of the most important features:
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Control of AC and EC fans – this allows you to continue using existing exhaust systems or switch to modern EC fans.
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Separate settings for day and night – e.g., different temperature or humidity setpoints when the light is off.
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Dehumidifying via exhaust air – if humidity is too high, the controller intelligently increases exhaust air.
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Optional heating and humidifier control – perfect if you want to actively shape the climate, not just passively.
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Dimming and switching lighting – with sunrise/sunset function for gentle ramping up and down instead of "lights on, lights off".
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Multiple timers for pump-like consumers, circulation, irrigation, or auxiliary devices.
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Intuitive menu with clearly structured sub-items; after a short familiarization period, all parameters can be finely adjusted.
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Reliable electronics Made in Germany – solid components, long-term availability, and comprehensible documentation.
Perfect for grow boxes, CSCs & professional indoor cultivation
Whether you're controlling a 120 grow box, a larger indoor room, a CSC flowering tent, or a small greenhouse in the basement: the GrowBase takes a lot of the manual work off your hands. Instead of checking humidity, temperature, and negative pressure several times a day and manually readjusting, the controller takes over these tasks fully automatically.
Thanks to negative pressure control, the airflow remains stable – a clear advantage when using activated carbon filters, if odors are to reliably remain within the system. Optionally integrated CO₂ control also makes the GrowBase a very exciting solution for setups that work with high light density and optimized CO₂ values.
Tips & Tricks for practical use
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Sensor position: Do not place the temperature and humidity sensor directly in the airflow of the exhaust pipe or immediately above a fan heater. An ideal position is in the "plant area," slightly offset to the side.
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Consciously set negative pressure: A slight negative pressure is sufficient – too much negative pressure robs you of air exchange capacity and can unnecessarily strongly suck in doors or tent walls.
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Use day/night values: Set a slightly lower temperature and slightly higher humidity at night. This corresponds to natural conditions and relieves heating and dehumidifiers.
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Activate Sunrise/Sunset function: The gentle ramping up at "sunrise" reduces stress for the plants and also protects the connected lighting.
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Label timers clearly: If you use several event or interval timers, it makes sense to create a small scheme or table for yourself – this way you keep track of what is switched when.
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Plan for firmware updates: It's worth checking the manufacturer's website from time to time. Via the USB interface, you can keep the GrowBase up to date and benefit from improvements.
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Safety first: Larger loads (fan heaters, multiple lights) should be switched via suitable relays or contactors. If in doubt, consult a qualified electrician.
FAQ – Frequently Asked Questions about the GrowControl GrowBase
What exactly can the GrowBase control?
The GrowBase handles the control of temperature, humidity, CO₂ levels, and negative pressure and can control lighting, exhaust air, intake air, heating, humidifiers/dehumidifiers, and other consumers, depending on the setup. You define in the menu which device is connected to which output and how it should react.
Do I absolutely need a CO₂ system to make good use of the GrowBase?
No. The GrowBase is a very powerful climate controller for grow boxes and grow rooms even without additional CO₂ supplementation. The CO₂ function is an optional extra for setups where a suitable CO₂ system and sensor are available. You can always retrofit this function later.
Can I use AC and EC fans simultaneously?
The controller is generally designed for AC and EC fans. Which combinations are suitable for your specific setup and which connections you use can best be found in the operating manual. Important: Fans with integrated speed control (e.g., temperature-controlled) should not be controlled via corresponding outputs.
Is the GrowBase also suitable for smaller home grows?
Yes. Especially in smaller rooms, the climate reacts very sensitively to temperature and humidity fluctuations. A digital climate controller like the GrowBase ensures that the values remain much more stable – and you don't constantly have your hand on the fan controller.
Can I dim LED lights with the GrowBase?
Many modern LED drivers and electronic ballasts have a 0–10 V or 1–10 V dimming input. These can be controlled with the GrowBase, including sunrise and sunset simulation. Whether your lamp is compatible can be found in the manufacturer's specifications.
How complex is the setup?
The basic settings are quickly done after a short familiarization: connect the sensor, plug in devices, define target values for temperature and humidity, select negative pressure – done. Fine-tuning (e.g., different day/night values, timer logic, CO₂ control) can be added gradually.
Is the GrowBase "overkill" for simple exhaust air control?
If you only want simple temperature-dependent exhaust air control, a simple, inexpensive climate controller is sufficient in many cases. The GrowBase is worthwhile as soon as you want to manage several parameters simultaneously (temperature, humidity, CO₂, negative pressure, light dimming) or want to expand your setup in the medium term.
Scope of delivery GrowControl GrowBase
- 1 × GrowControl GrowBase climate controller
- 1 × Combination sensor for humidity and temperature
- 1 × Three-hole disc for hanging the sensor
- 1 × Power cable for connection to the mains
- 1 × Printed quick guide
- Screws, dowels, and drilling template for easy wall mounting
With this, you have everything you need to quickly and cleanly set up your climate control in the grow room. CO₂ sensors, additional relays/contactors, and other accessories can be added depending on the setup.
Product safety information
The GrowBase is an electrical device and should always be operated according to the operating manual. Make sure not to exceed the permissible total load of the sockets and to professionally install all connected consumers. The humidity and temperature sensor must not be exposed to continuous wetness or extremely high humidity. In case of doubt, the connection of larger loads (heating, multiple lights) should be checked by a qualified electrician.
Manufacturer Information
Name: Growcontrol
Street: Gwinnerstr. 46
Postal Code, City: 60388, Frankfurt
Country: Germany (Hesse)
E-Mail: info@growcontrol.de
Homepage: https://www.growcontrol.de
