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 fr...

Clear up green or cloudy water caused by gravel and other floating particles in your freshwater aquarium quickly and safely with API ACCU-CLEAR Fre...

Treat and control algae growth and reduce your freshwater aquarium maintenance with API ALGAEFIX Algae Control. This revolutionary product is speci...

Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Fish continually release ammonia into the aquar...

A lack of electrolytes in aquarium freshwater may cause serious health problems for freshwater fish. API AQUARIUM SALT supplies electrolytes to imp...

API BIO-CHEM ZORB SIZE 6 Aquarium Canister Filter Filtration pouch uses superior resins and activated carbon to clean and clear aquarium water, rem...

Keep your aquatic life healthy and thriving by testing your aquarium water's calcium levels regularly with this easy-to-use API CALCIUM TEST KIT fo...

Keep your fish healthy and thriving by testing your aquarium water's KH levels regularly with this easy-to-use API CARBONATE TEST KIT for freshwate...

API E.M. ERYTHROMYCIN Freshwater Fish Powder Medication provides a broad spectrum control of bacterial fish infections, such as body slime, mouth f...

API FIN & BODY CURE Freshwater Fish Powder Medication treats bacterial disease, internal and external, in fish, including fin & tail rot, b...

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 fres...

Fast-acting API GENERAL CURE Freshwater and Saltwater Fish Powder Medication treats a wide variety of parasites in fish, including velvet, fish lic...

API HIGH RANGE pH TEST KIT may be used in fresh or saltwater aquariums to measure pH levels in the range of 7.4-8.8. Unbalanced pH levels, resultin...

Rid your fish of ich quickly and effectively with API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medicatio. API LIQUID SUPER ICK CURE Fres...

API MARINE ALGAEFIX Algae Control effectively controls these types of algae: Green algae, Red Slime, and Brown algae in saltwater aquariums. Works ...

API MELAFIX Freshwater Fish Bacterial Infection Remedy soothes the transition from store to home by reducing the risk of your fish developing a dis...

When left uncorrected, high nitrate in aquarium water can lead to water problems invisible to the eye, poor fish health and a build-up of organic p...

Keep your fish healthy and thriving by testing your aquarium water's NO3 levels regularly with this easy-to-use API NITRATE TEST KIT for freshwater...

Keep your fish healthy and thriving by testing your aquarium water's NO2 levels regularly with this easy-to-use API NITRITE TEST KIT for freshwater...

Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API pH TEST KIT for freshwater aquariums. Testin...

Phosphate can enter the aquarium in fish waste, decaying organic matter and tap water. High phosphate in the aquarium can cause water clarity issue...

Keep your fish healthy and thriving by testing your aquarium water's PO4 3- levels regularly with this easy-to-use API PHOSPHATE TEST KIT for fresh...

API PIMAFIX Antifungal Freshwater and Saltwater Fish Remedy treats fungal and bacterial infections in all fish, including even the most delicate fi...

API POND ACCU-CLEAR Pond Water Clarifier quickly eliminates cloudy pond water caused by dirt, silt and floating particles. This fast-working pond c...

Fast-acting API POND ALGAEFIX Algae Control works to control algae growth in ponds, water gardens, and fountains, keeping water clean and clear. AP...

API POND MELAFIX Pond Fish Bacterial Infection Remedy uses the antibacterial properties of tea tree (Melaleuca) to treat bacterial infections in po...

API POND STRESS COAT Pond Water Conditioner works instantly to remove chlorine, chloramines and ammonia from tap water and neutralize heavy metals....

API POND-ZYME SLUDGE DESTROYER Pond Water Cleaner with Barley reduces build-up of fish waste and consumes pond sludge, which is typically a build-u...

In a new aquarium, harmful ammonia and nitrite build up from fish waste, often resulting in fish loss or “new tank syndrome”. The unique, patented ...

Measure the most important reef aquarium levels including calcium, carbonate hardness (KH), phosphate and nitrate with API REEF MASTER TEST KIT. Pr...

Protect marine fish and invertebrates from unsafe water conditions with API SALTWATER MASTER TEST KIT. Fish waste, uneaten food, plant refuse and o...

Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API STRESS COAT Freshwater Aquarium Water Condit...

Reduce aquarium maintenance by creating a naturally balanced aquarium with API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution. Fis...

Good water quality is the key to a healthy, beautiful aquarium. Tap water contains chemicals, such as chlorine and chloramines, which make water sa...

API TURTLE SLUDGE DESTROYER Aquarium Cleaner and Sludge Remover Treatment reduces build-up of turtle waste and consumes aquarium/vivarium sludge, w...