For 50 years, fishkeeping enthusiasts have looked to the Tetra name for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need from a large variety of quality fish food and innovative equipment to test kits and decor. Tetra is a name you can trust in the aquatics industry. Tetra Stay Clean Filter Cartridges provide easier maintenance for healthier fish by maintaining healthy PH levels in your tank. Stable water helps prevent PH crashes, and the active cleaning reduces buildup on glass. The dual sided floss removes dirt and debris from your tank leaving you with a clean environment. Compatible with standard Tetra filters, these cartridges provide 4 stages of filtration to keep your water clean and clear. Ultra-Activated carbon will remove odors and yellow discoloration to keep your aquarium looking better than ever. Create a focal point for any room with a clean, clear aquarium.