Aquariums

API® pH DOWN pH adjuster lowers pH to make freshwater aquariums more acidic for fish and plants when levels rise too high. pH is the measure of aci...

API® pH DOWN pH adjuster lowers pH to make freshwater aquariums more acidic for fish and plants when levels rise too high. pH is the measure of aci...

API® PERFECT START is a unique aquarium starter pack that provides everything you need to kick-start your new aquarium, keeping your fish healthy a...

Nitrite is produced in the aquarium in the forms of fish waste, uneaten food, and by nitrifying bacteria in your aquarium’s natural cycle as it bre...

High nitrate levels in your aquarium indicate a build-up of fish waste and organic compounds, resulting in poor water quality and an increase in al...

API® MELAFIX fish remedy is an all-natural antibacterial treatment that works to treat infections in fish. Common bacterial infections are open wou...

API® MELAFIX fish remedy is an all-natural antibacterial treatment that works to treat infections in fish. Common bacterial infections are open wou...

API® MELAFIX fish remedy is an all-natural antibacterial treatment that works to treat infections in fish. Common bacterial infections are open wou...

API® MARINE STRESS ZYME bacterial cleaner contains millions of live bacteria that consume sludge and organic debris, reducing aquarium maintenance ...

API® MARINE STRESS COAT water conditioner instantly removes chlorine, chloramines, and ammonia from tap water to make water safe for fish in your s...

API® MARINE QUICK START nitrifying bacteria enables you to start your aquarium immediately, allowing for the instant addition of fish as it kick-st...

API® MARINE MELAFIX fish remedy is a safe, natural fish remedy which should be used to treat bacterial infections in saltwater fish and corals. MA...

API® LEAF ZONE plant fertilizer contains iron & potassium for colorful leaves and a vibrant planted aquarium. Product is formulated for rapid a...

The API® KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and prevent invisible water pr...

The API® HIGH RANGE pH TEST KIT measures pH changes in marine aquariums, aquariums with African Cichlids, and very alkaline tap water. The API HIGH...

API GOLDFISH PROTECT makes tap water safe for goldfish by removing harmful chlorine, chloramine, and ammonia from tap water. It also detoxifies amm...

API® GOLDFISH CARE PACK makes goldfish care quick and easy by combining the superior water conditioning of GOLDFISH PROTECT, which removes harmful ...

API® AQUARIUM SALT is made from evaporated sea salt and is a must-have for your aquarium! AQUARIUM SALT promotes fish health by improving gill func...

API® AQUARIUM SALT is made from evaporated sea salt and is a must-have for your aquarium! AQUARIUM SALT promotes fish health by improving gill func...

The API® FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high range ...

Copper – a treatment for many parasitic infections – must be monitored in an aquarium or a pond. The copper level can drop too low for the treatmen...

Carbon deficiency is one of the leading causes of poor plant growth in aquariums. API® CO2 BOOSTER product adds essential liquid carbon for planted...

Calcium is one of the most important elements in a reef aquarium. Reef invertebrates, such as corals, crustaceans, mollusks, and even some type of ...

Containing a superior blend of resins and activated carbon that removes aquarium pollutants – including colors, odors, heavy metals, and toxic gase...

API® BIO-CHEM STARS biological media provides a home for growing massive colonies of nitrifying bacteria to establish and maintain a healthy aquati...

API® BETTAFIX fish remedy is an all-natural, antibacterial fish remedy for Bettas that should be used whenever your Betta exhibits signs of disease...

Size: 236 ml AQUA ESSENTIAL water conditioner is a highly concentrated all-in-one water conditioner that instantly makes tap water safe for fish ...

Size: 118 ml AQUA ESSENTIAL water conditioner is a highly concentrated all-in-one water conditioner that instantly makes tap water safe for fish ...

Size: 473 ml AQUA ESSENTIAL water conditioner is a highly concentrated all-in-one water conditioner that instantly makes tap water safe for fish ...

The API® AMMONIA TEST KIT measures ammonia to help prevent fish loss, as ammonia is the number one stressor and killer of tropical fish. Ammonia is...

Use the API® AMMONIA TEST STRIPS as the quick and accurate way to test for the presence of ammonia. Kit reads 0 to 6 ppm of ammonia, and alerts you...

API® AMMO LOCK ammonia detoxifier is scientifically proven to protect fish against harmful ammonia by converting poisonous ammonia into a non-toxic...

API® AMMO LOCK ammonia detoxifier is scientifically proven to protect fish against harmful ammonia by converting poisonous ammonia into a non-toxic...

API ALGAEFIX algae control effectively controls many types of algae in aquariums and will not harm to your fish or plants when used as directed. Y...

API ALGAEFIX algae control effectively controls many types of algae in aquariums and will not harm to your fish or plants when used as directed. Yo...

API MARINE ALGAEFIX algae control effectively controls these types of saltwater algae: Green algae (Cladophora), “Red Slime” (Oscillatoria & Sp...