AA GKM24W Internal UV Sterilizer for Aquariums Up to 120 Gal – Black

Crystal-clear water, simple installation

Meet the AA GKM24W Internal UV System with Power Head, designed for aquariums up to 120 gallons. Water flows in direct contact with the UV lamp to maximize exposure, helping your tank look its best while supporting a balanced environment. This system offers a practical approach for hobbyists who want clearer water and less maintenance over time. Keep in mind that results can vary with tank setup and bioload.

Key setup benefits include a quick, tool-free install and a compact footprint that sits inside the tank. With the included suction cups, the unit stays securely in place as the pump circulates water through the lamp. The sealed UV bulb is designed to stay dry from the surroundings, reducing wear and simplifying bulb changes.

What you get and how it works

• All-in-one package with water pump, sealed UV bulb, control box, and adaptor
• Submersible design and 4 by 4 by 17 inch form factor fits most 120 gallon setups
• Direct-water contact UV design for efficient treatment and clearer water appearance
• 5 minute, tool-free installation using included suction cups

Usage, maintenance and safety notes

• Pump flow rate is 120 GPH, supporting steady circulation
• UV lamp and pump can be submerged and managed inside the aquarium
• Lamp replacement is straightforward via LED indicators; lamp lasts about 6 to 9 months with constant use
• Mercury-containing lamp should be disposed of according to state regulations; device is UL listed and carries EPA Est number

Operational guidance suggests turning off or reducing runtime once water appears clear to help extend lamp life. The goal is to balance energy use with ongoing water quality improvements, rather than promising guaranteed outcomes.