Collection: ENVIRONMENTAL CONTROL

Climate control is the foundation of a stable indoor grow: it brings together the equipment that measures and corrects temperature, relative humidity, and air exchange within the grow tent or room. Here you will find meters, humidifiers, dehumidifiers, and controllers that keep the climate within the optimal range at every stage of the cycle, without fluctuations or spikes that hinder the plant.

Climate control equipment you will find at Grow Industry

The range covers the three functions any indoor grow needs: measuring, correcting, and automating. To measure, the large-screen thermo-hygrometer records maximums and minimums and allows you to see at a glance what happened overnight. To increase humidity, the Pure Factory 8 L/day humidifier provides cool mist without raising the temperature; when the problem is excess humidity during flowering, the GOBI 50 L/day dehumidifier works in large rooms with continuous drainage. And to automate, the SMSCOM Smart Controller MK2 regulates the fan speed according to the temperature, while the Solux Digital Master Controller centralizes climate and lighting in a single device.

How to choose your climate control equipment: technical criteria

• Space volume: calculate the m³ (length x width x height) and size accordingly. The capacity of humidifiers and dehumidifiers is expressed in liters per day and should be oversized, not just adequate.
• Operating ranges: aim for 20-28 °C during the day and a relative humidity of 65-70% for cuttings, 50-60% during growth, and 40-50% in late flowering.
• Probes and precision: meters with an external sensor allow you to read at bud height, which is where it matters, rather than against the wall of the grow tent.
• Type of control: step controllers are more affordable; analog output controllers adjust the fan progressively, reduce noise, and prevent sudden starts.
• Hysteresis and cycles: an activation margin that is too narrow causes the equipment to start and stop constantly, shortening its lifespan.

Usage tips and common mistakes

The most common mistake is measuring at a single point. The temperature next to the light can be five or six degrees higher than on the floor, so place the probe at bud height and also check the nighttime reading: a temperature jump of more than 10 °C between day and night promotes condensation and mold. Another classic mistake is humidifying without sufficient extraction, which spikes the VPD and saturates the environment. Adjust the airflow first, then the humidity. Clean the ultrasonic transducers with reverse osmosis water every few weeks: limescale renders them useless and reduces the mist by half. Finally, do not leave the hygrostat at 100% permanently during flowering, because high humidity in dense buds is the gateway for botrytis.

Related categories

If you are looking for specific controllers and thermostats, take a look at climate control and environmental controllers. To act on each parameter you have dehumidifiers, fans to move the air, and CO₂ systems once you have mastered temperature and humidity.