Perfect climate control in the grow tent: 22–26°C at 60–70% humidity in veg, 20–24°C under 50% in flower — automated with controller and hygrometer.
IDEAL VALUES:
Vegetative: 22-26°C, 60-70% humidity
Flowering: 20-24°C, 40-50% humidity
Night: 2-5°C cooler than during the day
Air movement: Gentle breeze, leaves slightly wobbling
CLIMATE EQUIPMENT:
Thermostat with heating/cooling: 50-100€
Hygrostat for humidity: 30-60€
Exhaust fan with speed controller: €80-150
Intake fan or passive openings
Recirculation fans: 2-3 pieces
AUTOMATION:
Digital controller (e.g. Cli-Mate): €200-400
Controls temperature, humidity, ventilation
Alarm functions for limit values
Data logging for optimisation
SOLVE PROBLEMS:
TOO HOT (over 28°C):
→ More powerful exhaust fan
→ Increase LED spacing
→ Install air conditioning
TOO COLD (below 18°C):
→ Heating mat or tube heater
→ Warm LED lighting
→ Improve insulation
TOO LIGHT (over 70%):
→ Dehumidifier (dehumidifier)
→ Stronger ventilation
→ Water less
TOO DRY (below 40%):
→ Humidifier
→ Hang up wet towels
→ Weaker ventilation
AIR CIRCULATION:
Complete air exchange every 1-3 minutes
Negative pressure: Tent sucks in easily
Carbon filter against odour
Intake filter against pests
PROFI-TIP: Night/day cycle important for healthy development. Constant values more important than perfection.
The ideal temperature during the vegetative growth cycle is between 22 and 26°C.
During the flowering phase, humidity should be kept below 50%.
Key devices include a temperature and humidity controller and a hygrometer for full automation.