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Medicinal Herbs - Cannabis Grow SimulatorNewsUpdate 0.21.7
Game update

Update 0.21.7

Medicinal Herbs - Cannabis Grow Simulator · published 19 Aug 2026, 14:24 UTC

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MediHerbs – Update 0.21.7.0 🌱🌦️

Update 0.21.7.0 brings a major overhaul to the indoor climate simulation and climate equipment.

🌦️ Climate Simulation 2.1

The room climate system has been reworked to make temperature, humidity and CO₂ management more realistic and easier to balance.

  • Improved temperature and humidity simulation
  • Climate equipment now uses more realistic performance values
  • Electrical power consumption and actual heating/cooling performance are now handled separately
  • Air conditioners now use realistic cooling efficiency instead of treating electrical power as cooling power
  • Heaters, humidifiers and dehumidifiers have been rebalanced
  • CO₂ equipment now uses realistic output rates
  • Room size now has a much greater impact on how quickly the climate can be changed
  • Large rooms may now require considerably stronger equipment

🌡️ Better Climate Equipment Balancing

The different sizes of air conditioners, heaters, humidifiers and dehumidifiers have been reviewed and rebalanced.

This makes upgrading your equipment much more important as your grow rooms become larger or produce more heat and humidity.

🍃 VPD Support

The climate system can now calculate VPD (Vapor Pressure Deficit) based on the current room conditions.

VPD has also been integrated into the room monitoring system, giving you another useful value for judging how suitable the current environment is for your plants.

📟 Improved Climate Displays

The LittleLCD / Multitool LCD monitoring displays have been expanded to provide more useful information about the current room climate alongside temperature, humidity and CO₂.

🔧 Additional Improvements

  • Improved climate-machine calculations
  • Rebalanced climate-related item settings
  • Improved interaction between room climate and active equipment
  • Various balancing adjustments and smaller fixes to the new climate simulation

The climate system will continue to be expanded and balanced as MediHerbs grows. 🌱

Thank you for playing and for all the feedback! ❤️

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