VIVOSUN AEROSTREAM UO75 USB Humidifier - 750 ml Smart Ultrasonic Mist Maker for Grow Tents & Small Spaces

What spaces is the VIVOSUN AeroStream UO75 best suited for?

This compact USB humidifier is ideal for small grow tents, clone boxes, smart grow setups, and small rooms like offices or bedrooms. It’s not powerful enough for large grow tents or open spaces with heavy airflow.

How much mist does the VIVOSUN AeroStream UO75 produce, and how long does it run?

It outputs 30–50 mL of mist per hour. On a full 750 ml tank, it can run up to 18 hours in Continuous mode or 28 hours in Intermittent mode, depending on your environment and airflow.

Does the VIVOSUN AeroStream UO75 have different mist settings or humidity control?

Yes, it has two mist modes: Continuous and Intermittent. It doesn’t have adjustable mist strength or a built-in humidistat but can be paired with external humidity controllers for more precise control.

How is the VIVOSUN AeroStream UO75 powered, and is it compatible with smart systems?

It uses a USB-C connection and draws low power (5V, 1.5W). It works with power banks and most 5V USB adapters. It integrates with the VIVOSUN VGrow system for app control but isn't compatible with the GrowHub Controller E42A.

Where should I place the VIVOSUN AeroStream UO75 for best results?

Place it inside your grow tent on a stable, slightly elevated surface, away from direct light or electronics. For best results, keep airflow moving and avoid aiming mist directly at plants or surfaces.

What type of water should I use in the VIVOSUN AeroStream UO75?

Use clean tap water. Avoid distilled, reverse osmosis, or filtered water, as they may damage the unit or clog the wick. Never add oils, nutrients, or other additives to the tank.

How do I maintain the wick in the VIVOSUN AeroStream UO75?

Fully soak the cotton wick before first use. Replace it if you notice discoloration, odor, or weak mist. Replacement wicks are available—contact support if you need help finding them.

How do I clean the VIVOSUN AeroStream UO75 and prevent odors?

Clean the tank weekly with a soft cloth and avoid letting water sit unused. Dirty tanks and wicks can cause musty smells. Don't rinse the unit under running water—wipe gently instead.

What should I do if the VIVOSUN AeroStream UO75 isn’t misting properly?

Check the water level, ensure the wick is soaked and not worn out, and verify you're using a stable power source. Cleaning the unit and replacing the wick often resolves misting issues.

Is the VIVOSUN AeroStream UO75 safe and quiet for overnight use?

Yes—it’s quiet and has auto shut-off when water runs low. For safety, don’t overfill, keep it upright, and use it on a stable surface. Some units have LED indicators, which can be covered if needed.

What comes with the VIVOSUN AeroStream UO75, and is there a warranty?

It includes the humidifier, a USB-C cable, and internal wick components. The unit comes with a 1-year warranty covering defects with proof of purchase.