Powerful High-Capacity Humidifier for Optimal Humidity & VPD Control in Large Indoor Setups

The Mars Hydro 15 L Ultrasonic Humidifier was developed for large grow rooms, professional indoor setups, and powerful LED systems.
With its huge 15-liter tank, strong mist output, and precise humidity control, it is ideal for growers who need consistent humidity in medium to very large spaces.

Perfectly suited for:
✔ large grow tents
✔ open grow rooms
✔ CO₂-optimized systems
✔ high LED output
✔ professional hydro & RDWC environments

✅ Advantages at a glance

✔ Gigantic 15-liter water tank – extremely long runtime without refilling
✔ High mist output – rapidly increasing & stable humidity
✔ Ultrasonic technology – cool, fine mist, ideal for VPD & plants
✔ Precise humidity control – for veg, stretch, flower & drying
✔ Quiet operation – perfect for living areas and low-noise setups
✔ Multiple mist outlets – optimal distribution throughout the room
✔ Automatic shut-off function when tank is empty
✔ Compatible with hygrostats & controllers
✔ Easy cleaning & robust construction

🔧 Technical Data

💡 Why this 15L humidifier is ideal for large indoor grows

🌬️ Enormous mist output for large volumes

Due to its high evaporation rate, the humidifier can quickly bring even large rooms to the desired humidity.

🌱 Optimal conditions for VPD & plant physiology

• better leaf respiration

• ideal transpiration

• more stable temperatures

• perfect humidity control in every phase

🧪 Reduces stress & boosts growth

Stable humidity leads to:

• stronger plants

• higher nutrient uptake

• fewer problems like dry spots or salt stress

🧱 Large tank = less effort

With a 15 L tank volume, the device runs for many hours – ideal for demanding projects or professional use.

🛠️ Application & Notes

1. Fill tank with fresh water (optimally: distilled or filtered).

2. Place device in the grow room – not directly next to plants.

3. Adjust mist intensity to the phase:

   • Vegi: 60–70 %

   • Stretch: 55–65 %

   • Flower: 40–55 %

4. For automatic control, use a hygrostat or climate controller.

5. Regularly clean membrane & tank (avoid limescale & biofilm).

Tip: Use distilled water for maximum hygiene & membrane lifespan.