Why You’ll Love It
This targeted aquarium UV light promotes a healthier environment for fish and aquatic plants by reducing harmful microorganisms and preventing the buildup of organic waste. The UV bulb is replaceable. It is the ideal clean light for 5-40 gallon tanks.
Key Features
Effective UV Sterilization for Pristine Water Quality
The hygger 191 UV Sterilizer Light harnesses the power of ultraviolet light to target and eliminate green water and algae, ensuring crystal-clear water conditions. It is suitable for both saltwater and freshwater aquariums, providing reliable water sterilization for diverse aquatic ecosystems.

Convenient Timer Control for Automated Operation
With its intuitive 4-mode timer system (3H, 6H, 12H, 24H), the UV Sterilizer Light allows for seamless automation of your aquarium’s lighting schedule. Simply select your desired duration, and the light will automatically manage the on/off cycle, maintaining consistent water quality without constant monitoring.
Safety-First Design with 360° Protective Shield
Safety is paramount with the UV Light. Its compact unit is equipped with a 360° protective shield, safeguarding both users and fish from harmful UV radiation. This thoughtful design ensures peace of mind, allowing you to maintain optimal water conditions without compromising on safety.
Dual-Mode Functionality for Versatile Use
The UV Sterilizer Light offers two distinct modes to cater to different aquarium setups:
– Healthy Mode (Closed Shield): Place the light directly in the fish tank for gentle, continuous sterilization.
– High Efficiency Mode (Open Shield): Install the light in filter tanks for enhanced sterilization power, ensuring thorough water purification.
– 3W for freshwater and saltwater tanks 5–25 gallons, while 5W for 13-40 gallon tanks.

User-friendly features for Easy Installation and Maintenance
– Designed with user convenience in mind, the hygger UV Sterilizer Light boasts several practical features:
– Suction Cups: Securely mount the light on the tank with the included suction cups.
– Compact Size: Fits seamlessly into various aquarium sizes without taking up valuable space.
– Waterproof Construction: Built to withstand the moist environment of an aquarium, ensuring reliable operation.
– Easy Installation: Align the grooves and insert the suction cups for hassle-free setup.

Usage Tips
- The HG191 UV bulb is replaceable; it is recommended to replace the bulb at least every 6 months.
Specification

Package:
1 x UV light with timer
4 x Suction cup
1 x User manual




















This is by far the best investment I could have made for my tank for my goldfish with my quest on algae. With plants, and filtered water and shade and the UV light my tank is 100% better because of it!!
I will be buying all my products from Hygger for my fish tanks!!
It’s simple to use and easy to install. I just think it should be even more clear that the guard must be turned to closed if you have fish. Like a sticker you remove that has a warning.
I just bought yesterday and its been working around 8 hours its still so early to notice a difference, but works fine so far
I really like this product! Visually it is very well made and executed! The variable shutter is such a great idea! I’ve only had this a few days, but is already looks like my aquarium water is more clear!
seems to be helping, not sure yet how much.
It’s helping to keep my tank cleaner.