Most water problems are invisible to the eye. Quickly measure and modify the six aquarium levels that are most important to the health of your freshwater fish with the API FRESHWATER MASTER TEST KIT. To stay healthy and thrive, fish need properly balanced levels of ammonia, pH, high range pH, nitrit...

Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API STRESS COAT Freshwater Aquarium Water Conditioner. Tap water contains chlorine, chloramines and ammonia which can cause gill and tissue damage, breathing difficulty, stress and death. API STRESS CO...

Good water quality is the key to a healthy, beautiful aquarium. Tap water contains chemicals, such as chlorine and chloramines, which make water safe for drinking, are highly toxic to fish. High levels of these chemicals destroy fish gill tissue, preventing the uptake of oxygen which can lead to fis...

A lack of electrolytes in aquarium freshwater may cause serious health problems for freshwater fish. API AQUARIUM SALT supplies electrolytes to improve fish respiration. Made from evaporated sea water and containing natural active ingredients such as a natural fish tonic, API AQUARIUM SALT promotes...

Clear up green or cloudy water caused by gravel and other floating particles in your freshwater aquarium quickly and safely with API ACCU-CLEAR Freshwater Aquarium Water Clarifier. This liquid clarifier combines tiny particles together to form larger clumps so they can settle at the bottom or be rem...

The 14-Day automatic API VACATION PYRAMID FISH FEEDER contains nutritious food pellets that are released slowly, as the pyramid dissolves. It is made with superior nutritional ingredients to feed all tropical, coldwater and marine aquarium fish while you're away for up to fourteen days. It includes...

Rid your fish of ich quickly and effectively with API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medicatio. API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medicatio works quickly to heal freshwater fish of icthyophthirius ("Ich") or Cryptocaryon, highly contagious parasitic disease...

Treat and heal wounds, diseases and infections with API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Treatment. This natural antibacterial remedy promotes rapid re-growth of damaged fins and skin. Use it to treat ulcers, mouth fungus, fin and tail rot and when you see signs of...

API MELAFIX Freshwater Fish Bacterial Infection Remedy soothes the transition from store to home by reducing the risk of your fish developing a disease. The fish you bought may already carry a disease. Disease is often difficult to detect, particularly in its early stages. Treat bacterial infections...

API ALGAE SCRAPER GLASS uses an extra-long, extra-strong handle with durable scrubbing pad for easy cleaning in glass aquariums. Removes unsightly algae quickly and effectively, with extra-long handle to prevent hands from getting wet. Not for use on acrylic or plexiglass. Do not use on dry surfaces...

Keep your fish healthy and thriving by testing your aquarium water regularly with easy-to-use API 5-in-1 TEST STRIPS. API 5-in-1 TEST STRIPS for freshwater and saltwater aquarium help fish owners measure levels of Nitrite, Nitrate, Carbonate & General Hardness, and pH found in aquarium water. In ord...