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Humidifier Supermist 8l
The Supermist 8L is a luxury ultrasonic humidifier that maintains relative humidity in your grow space without heat or burn risk. The generous 8-litre water reservoir delivers 20 to 25 hours of continuous operation — sufficient for a full day/night cycle without refilling. Cold-mist ultrasonic technology produces whisper-quiet operation and adds no heat to the tent. The directional, adjustable nozzle lets you steer vapour flow precisely to plants requiring moisture. Just 25 watts power draw keeps running costs minimal for continuous operation. Automatic water-level protection prevents dry-running damage, and maintenance is straightforward. The engineered choice for growers managing humidity through dry European winters and hot summers.
Supermist 8L Humidifier — Ultrasonic Cold-Mist for Optimal Humidity Control
The Supermist 8L Humidifier is an ultrasonic device engineered for grow spaces where precise humidity control differentiates vigorous plants from stress-induced stagnation. During vegetative growth, plants draw moisture from their environment through transpiration; when air becomes too dry, they close their stomata and growth halts. The 8-litre reservoir delivers 20 to 25 hours of runtime — sufficient for a complete day or night cycle without intervention. A reliable choice from the climate control range at Plant and Flower.
Ultrasonic Technology: The Technical Advantage
Conventional humidifiers operate via heating (steam) or evaporation across a wet wick. Both approaches have drawbacks in grow rooms: steam raises temperature and conflicts with ventilation strategy, while evaporation is too slow to humidify large volumes quickly. The Supermist uses piezoelectric ultrasonic technology: a high-frequency vibrating membrane fragments water into 1-5 micrometre droplets that suspend directly in air. The result is cold mist without thermal input, ideal for situations where grow lights already contribute significant heat load. At 25W power draw, energy cost is negligible even under continuous operation — approximately 0.6 kWh per day.
- 8-litre water reservoir: 20-25 hours continuous operation without refilling, covers a day/night cycle.
- Cold-mist technology: zero temperature increase to grow space, no burn risk on contact.
- 25W power consumption: negligible contribution to energy costs — roughly 0.6 kWh/day in continuous use.
- Directional nozzle: aim the vapour stream precisely toward areas requiring additional humidity.
- Automatic water-level protection: shuts off when reservoir empties, protecting the ultrasonic membrane.
Build a Closed-Loop Humidity System
The Supermist has no built-in humidistat — it runs when powered. For a fully automated setup, pair it with the Cli-Mate Humi Controller: this unit switches the humidifier on when ambient humidity drops below your configured threshold, and off when the target is reached. Your RH level oscillates stably around a setpoint (for example 60%) without daily manual adjustment. This combination is particularly valuable for growers absent for multiple days or for installations where temperature and photoperiod vary significantly across the cycle. Without a controller, you can manage manually by powering down at night when temperature drops and RH rises naturally.
Humidity Targets Across Growth Phases
Different growth phases demand different RH targets. Seedlings and cuttings require 65-70% to minimise transpiration loss. Vegetative growth operates optimally at 50-65%. Early flowering drops to 45-55%, and late flowering to 40-50% to prevent botrytis and other fungal issues on dense flower structures. Hitting these targets consistently requires measurement — pair the Supermist with a reliable thermo-hygrometer for continuous readings. Measuring without controlling is half a solution; controlling without measuring is guesswork. The combined system ensures your plants experience optimal conditions at every phase of the cycle.
Order the Supermist 8L from Plant and Flower with fast shipping across Belgium. The reliable solution for growers managing professional-grade humidity across all seasons.
What relative humidity level should I target in my grow tent?
Optimal RH varies by growth phase. For cuttings and seedlings, target 65-70% to limit transpiration stress. During vegetative growth, 50-65% supports healthy foliage development. In early flowering, drop to 45-55%, and in late flowering to 40-50% to prevent botrytis and other fungal issues on dense flower clusters. The Supermist with hygrometer and controller makes these staged transitions straightforward to implement.
Is there a risk of white mineral deposit on my plants?
Ultrasonic humidifiers disperse dissolved minerals alongside the mist. With hard European tap water, this can produce white scale deposits on leaves and equipment over time. The solution: use reverse-osmosis water, demineralised water, or filtered rainwater, or at minimum softened water. Clean the reservoir weekly to prevent scale buildup inside the unit. A small amount of white vinegar during cleaning dissolves stubborn calcium deposits effectively.
How often should the reservoir be cleaned?
Weekly cleaning is the minimum standard, more frequent under intensive use. Empty the reservoir completely, rinse with warm water and a splash of vinegar, then allow 10 minutes of contact time to address scale and early bacterial growth. Dry thoroughly before refilling with fresh water. Between cycles, fully dry the reservoir to prevent mould and algal growth. Regular maintenance significantly extends ultrasonic membrane lifespan.
Can the Supermist function as summer cooling?
Cold mist produces a modest evaporative cooling effect as microdroplets evaporate in warm air. In a well-ventilated tent, this can reduce temperature by 1-3°C during peak summer conditions. This is a side effect, not a primary cooling function — the Supermist is engineered for humidity control, not active temperature management. During severe summer heat, a powerful extractor or dedicated air conditioning remains essential; the Supermist then plays a complementary role.
