RAM 5L Ultrasonic Humidifier · 400ml/h Output for Grow Tents & Climate Control

The RAM 5L Ultrasonic Humidifier is a high-performance misting device designed to maintain the exact moisture levels your indoor plants need to thrive, delivering a steady 400 ml/h output to supercharge your vegetative growth.

Are your plants looking a bit sad, with crispy leaves and sluggish growth during their early stages?

Low humidity is a silent killer in indoor gardens. When the air is too dry, your plants close their stomata to save water, which completely halts photosynthesis. Add the heat from your grow lights, and you've got a recipe for stunted, stressed-out plants that will never reach their full yield potential. It's frustrating to put in the work and see your seedlings struggle just because the air is too dry.

That's exactly where this 5-liter beast steps in. By providing a consistent, ultra-fine mist, it instantly corrects the environment in your grow space, allowing your plants to breathe, feed, and grow explosively without you having to babysit a tiny water tank every two hours.

Perfect Moisture for Explosive Vegetative Growth

Maintaining the right Vapor Pressure Deficit (VPD) is the secret to professional-level yields, and this humidifier makes it effortless. With its generous 5-liter capacity, you can say goodbye to the annoying chore of refilling your reservoir multiple times a day. It provides a steady, cool mist that keeps your canopy lush and vibrant, creating the tropical environment that cannabis plants love during their vegetative phase.

Because it uses ultrasonic technology, it operates in near silence. You won't have to deal with annoying buzzing or vibrating noises, making it incredibly discreet. Whether you are running a massive setup or just a couple of standard Grow tents in your bedroom, this device integrates seamlessly into your Climate Control strategy, ensuring your plants stay hydrated and happy.

How to set up and use your RAM 5L Humidifier

Getting this unit up and running is a breeze. Just follow these simple steps to ensure optimal performance and safety in your grow room:

1. Preparation: Remove the water tank from the base, flip it upside down, and unscrew the cap. Fill it with clean water (distilled or reverse osmosis is highly recommended).
2. Assembly: Screw the cap back on tightly, flip the tank right-side up, and place it securely back onto the base.
3. Placement: Position the humidifier on a flat, elevated surface inside your grow space. Avoid placing it directly on the floor or pointing the mist directly at your electronics or carbon filter.
4. Operation: Plug the European cable into your power source (220-240V) and turn the dial to adjust the mist output up to 400 ml/h according to your needs.
5. Mistake to avoid: Never add essential oils, fertilizers, or cleaning chemicals into the water tank, as this will damage the ultrasonic membrane and harm your plants.

Why this 400ml/h humidifier is a game-changer

• 5-liter water tank: It holds a massive amount of water, which means you get extended run times and fewer trips to the sink.
• 400 ml/hour maximum output: It rapidly increases moisture levels, ensuring your plants recover quickly from dry spells and maintain vigorous growth.
• Ultrasonic technology: It produces a micro-fine mist without heating the water, which means it operates silently and won't raise the temperature of your grow room.
• Adjustable analog dial: It allows you to easily dial in the exact amount of vapor you need, giving you total control over your environment.
• Compact 2 kg design: It is lightweight and easy to move, meaning you can easily reposition it as your canopy grows and changes shape.

Maintenance and cleaning tips for a longer lifespan

To keep your RAM humidifier pumping out fresh, clean mist run after run, regular maintenance is key. Hard water can leave mineral deposits (white dust) that clog the ultrasonic membrane and reduce efficiency. We highly recommend cleaning the tank and the base at least once a week during continuous use.

If you want to automate your setup even further, consider plugging this unit into a reliable Humidity controller. This way, the humidifier will only turn on when the moisture drops below your target, saving water and preventing over-humidification.

• Always empty the tank and let it dry completely if you are not going to use it for a few days to prevent mold growth.
• Use a soft brush and a mild mixture of water and white vinegar to gently clean the ultrasonic disk.
• Rinse thoroughly with clean water after descaling to ensure no vinegar residue is vaporized onto your plants.

Frequently Asked Questions

Can I use tap water in the RAM 5L Humidifier?

While you can use tap water, it is highly recommended to use distilled or reverse osmosis (RO) water. Tap water contains minerals that can build up on the ultrasonic membrane, reducing its lifespan and leaving a fine white dust on your plants and equipment.

How long does the 5-liter tank last on a single fill?

It depends on the output setting. If you run it at the maximum capacity of 400 ml/hour, a full 5-liter tank will last approximately 12.5 hours of continuous use. On lower settings, it can easily last over 24 hours.

Does this humidifier increase the temperature of the grow room?

No. Because it uses ultrasonic technology rather than a heating element to create vapor, it produces a cool mist. In fact, it might slightly lower the ambient temperature of your grow space.

Personal Experience of Pevgrow’s CEO (Alan)

I've tested countless humidifiers over the years, and the RAM 5L is honestly one of the most reliable workhorses for standard indoor setups. When I'm popping seeds or pushing clones through their early veg stage, keeping the humidity around 65-70% is non-negotiable. What I love most about this unit is the simplicity; there are no complicated digital screens that break or reset during a power outage. You just turn the dial, and it pumps out a thick, consistent fog.

The 5-liter capacity is the sweet spot—it's large enough that I'm not a slave to refilling it, but compact enough that it doesn't eat up valuable floor space in my tent. My personal trick? I always pair it with an external plug-in hygrostat. I set my target humidity, plug the RAM in, leave the dial on max, and let the controller do the thinking. Just remember to use RO water if you can; it keeps the transducer spotless and your carbon filter happy!