TetraFauna ReptoGuard Turtle Health Conditioner is a slow-dissolving conditioner that helps to create a healthier environment for aquatic turtles as well as amphibians and other reptiles The slow-release medicated sulfa help to control common irritations– for a happy turtle TetraFauna ReptoGuard Turtle Health Conditioner helps to avoid a variety of irritation-causing particles including salmonella for the safety of pets and owners Each unique turtle-shaped block treats up to 20 gallons of water and lasts up to 2 months Use one TetraFauna ReptoGuard Turtle Health Conditioner block per 20 gallons of water Each block will slowly dissolve releasing the active ingredients continuously for up to 60 days Use with TetraFauna AquaSafe For Reptiles & Amphibians which neutralizes harmful chlorine chloramines and heavy metals such as copper iron and zinc in tap water and contains colloids that protect turtle skin TetraFauna products are trusted by pet owners to meet the needs of their exotic animals Since 1951 Tetra has developed the world’s most comprehensive body of fish food knowledge and fishkeeping enthusiasts have looked to the brand 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.