Czarixa XS Filter Cartridges Compatible with Koller Products Aquarium Internal Power Filters 1.5 to 3 Gallon, Extra Small Fish Tank Replacement Filter Carbon Cartridges for Clean Aquarium Water,6 Pcs

Filter Cartridge Replacement for: This pack of 6 extra small fish tank filter cartridge fit for Koller Products aquarium internal power filters. This fish tank filter xs fits a wide range of popular aquarium models including 1.5-gallon, 2-gallon, and 3-gallon fish tanks for Koller Products internal power filters. Measuring 3.09 x 2.17 x 0.4 inches / 78.39 x 55.14 x 10.13 mm, these xs replacement filter cartridges ensure compatibility with your fish tank accessories

Three-Stage Filtration: The first cotton layer of the fish tank filter cartridge filters out physical waste like uneaten food and plant matter. The extra small replacement filter for fish tank's inner layer of high-grade activated carbon chemically decreases dissolved pollutants, odors, and discoloration, and the final precision layer captures micro-particles, guaranteeing superior water quality

Maintains Steady Water Flow: The xs replacement filter cartridges for Koller are well-designed with minimal toner leakage, and the evenly distributed cotton won't impede the normal flow of water, not affecting the fish and turtles in the aquarium

Easy Maintenance: No more soggy hands or complicated steps! These fish tank filter cartridges are 100% ready-to-use. Simply swap out the old filter cartridge for a fresh one in seconds. The "No Getting Hands Wet" design makes monthly filter maintenance a quick, clean, and simple ritual to ensure optimum aquarium filtration performance

6-Pack Value Pack：Six extra small replacement aquarium filter cartridges for Koller provide a 6-month supply. To achieve optimal water quality, please change the fish tank filter cartridge every 3 to 4 weeks according to the number of fish in it. Using our xs filter cartridges for fish tank helps maintain stable water parameters, and provides a cleaner, safer environment for your fish, leading to less stress and better vitality