Our LED Aquarium Lights offer a unique lighting experience, enhancing the appearance of your 3-10 gallon tank and creating a mesmerizing underwater world. These lights are suitable for most Koller aquariums.

Regarding the filter cartridges, it's important to note that our small cartridges are designed to fit the filters that come with Koller products, such as 1.5/4.5/5/6/7 gallon fish tanks. The filter cartridge size is 5" x 2.38" (L x W). While these cartridges are primarily intended for Koller products, it's best to check compatibility with other brands of filters before purchasing.

As for the replacement of the filter cartridge, it's recommended to replace it every 3 to 4 weeks or when it becomes heavily soiled. The carbon in the filters will not affect the water pH, as its function is to remove impurities and chemicals from the water, not to alter the pH of the water source. However, regularly monitoring the pH of the water is always a good habit to ensure that any changes remain within an acceptable range.

The importance of replacing the filter cartridge cannot be overstated. Filter cartridges are widely used in aquariums as they resolve many water quality issues, removing organic waste and impurities, including odors and discolorations that can develop over time in the aquarium. This efficient filtration system helps maintain ideal water quality and a crystal-clear, healthy aquatic environment for your fish.

The filter cartridge features a dual-sided poly-fiber shell that effectively removes fish waste and other debris. It is suitable for a wide range of aquarium sizes, from small home aquariums to large professional aquariums, providing superior filtration for your aquarium ecosystem.

The cartridges come fully assembled, with an easy-grip tap that keeps your hands dry during installation. It's important to rinse new activated carbon with water before use to remove any dust or tiny particles from the surface. Replacement every 3-4 weeks is recommended to ensure the cartridge's effectiveness.

In summary, our LED Aquarium Lights and filter cartridges are designed to enhance the appearance and water quality of your aquarium, providing a mesmerizing underwater experience and a healthy environment for your fish. Please ensure compatibility with your specific aquarium model before making a purchase.

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