Coospider HR-380B 3.8L Reptile Fogger, Ultrasonic Mist, Auto Shut-Off

For a terrarium that needs regular misting, the Coospider HR-380B sends a fine ultrasonic fog through an adjustable hose, helping distribute moisture through the habitat. Its 3.8L capacity and adjustable mist output make it practical for reptile and amphibian enclosures, while automatic shut-off responds when the tank runs dry.

A front rotary knob keeps mist adjustment straightforward, and the quiet-running design is suited to habitats in rooms where lower operating noise matters. How much mist does your enclosure need? Turn the control to set the output for your setup.

Key features

Ultrasonic atomization produces a fine mist for terrariums, vivariums and paludariums. The adjustable hose directs fog into the enclosure, while the rotary control lets you change the output to suit the habitat. At the maximum setting, the listed output is 280 ml per hour, at medium misting, a refill can last up to 26 hours, or up to 10 hours at maximum output. Actual runtime varies with the selected mist level.

The fogger is designed for quiet operation, with a stated noise level below 35 dB. That can be useful for enclosures kept in living spaces or bedrooms, including when misting is needed overnight. Buyers often praise its ease of use and quiet operation, while feedback on humidity management and durability is mixed. The adjustable mist setting provides a direct way to manage output for your habitat.

Fit and sizing

The recommended application is a single-compartment terrarium in the 10–40 gallon range. With a 3.8L reservoir, the unit can supply mist over extended periods between refills, particularly at medium output. It is intended for a range of reptiles, amphibians and other herps, making it suitable for keepers setting up a humid habitat for species that need regular misting. Match the output to the enclosure and its care requirements rather than treating the fogger as a substitute for species-specific humidity management.

Practical tips

Before use, switch the unit on using the switch at the back, then adjust the mist with the front rotary knob. The hose can be positioned to direct fog into the enclosure, its adjustable length is listed as 1.5–6.3 feet. Check the mist’s direction and output as you set up the habitat, so moisture reaches the intended area. When the tank runs dry, the indicator changes from green to red and the fogger stops automatically. Refill or move the device only after it has stopped running, do not add water or move it while operating.

Questions before you buy

How do you adjust the mist output? Use the rotary knob on the front of the fogger to increase or reduce the mist. The rear switch must be turned on before operation.

What happens when the water runs out? The indicator changes from green to red, and the fogger automatically stops working.

Does it have a timer? No. The control adjusts mist output, while operation is managed manually, the unit does not have a timing function.

When it makes sense

The HR-380B suits reptile and amphibian keepers who want a reservoir-based fogger with adjustable output for a 10–40 gallon single-compartment terrarium. Its ultrasonic mist, adjustable hose and dry-tank shut-off are useful for routine habitat humidification, while the simple knob control makes it easy to tailor misting to the enclosure. For a setup where quiet operation and longer intervals between refills at medium output are priorities, this fogger offers a focused, practical way to add mist.