Key Features:

UV-C sterilizer helps neutralize harmful micro-organisms and free-floating algae, it can help turn green water to clear in 3 to 7 days. Please note, UV sterilizer could only kill free-floating algae, also called "green water". The algae covered on tank won't be killed by the UV sterilizer, because they attached themselves on the surface and won't get into the UV unit. In most of cases, you can use pleco to remove this type of algae.

Built in UV-C lamp ballast and single power cord mean streamline and clutter-free installation and operation

Suitable for both saltwater and freshwater tank

Clean up to 40 gallons tank, DIMENSION:  11.2" x 3.3" x 3"

INCLUDES:  UV unit with built-in pump + UVC Light Bulb

DIMENSION:  

11.2" x 3.3" x 3"

INCLUDES:

UV unit with built-in pump

UVC Light Bulb

Suction cup mounting brackets

Air tubing

 

WARNING:

UV-C LIGHT has an intense burning effect on human skin and can quickly damage your eyes.  Do not expose your skin or eyes to an unprotected UV-C light. 

If you want to check the working status of it, always do so through the indicator.