For 50 year, 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. With decades of proven performance and high quality products it’s no wonder Tetra is the go to brand for aquatic beginners and veterans alike. Tetra fauna ReptoFilter Cartridges keep your water crystal clear. ReptoFilter disposable filter cartridges use dense, dual-sided mesh to catch debris and waste while the Ultra-activated carbon absorbs odors and discoloration. Pre-assembled, these cartridges are convenient and easy to use. Create a clean environment for your reptile to enjoy. Make your terrarium the focal point of any room. Large cartridges fit the ReptoFilter 125GPH.