API

Measures pH, Nitrite, Nitrate, Carbonate & General Hardness. Just dip & read!

Quickly clears cloudy aquarium water, eliminating clouds caused by dirt and debris. Clumps tiny particles, causing them to fall to the bottom or...

Quickly clears cloudy aquarium water, eliminating clouds caused by dirt and debris. Clumps tiny particles, causing them to fall to the bottom or...

Quickly clears cloudy aquarium water, eliminating clouds caused by dirt and debris. Clumps tiny particles, causing them to fall to the bottom or...

A revolutionary new product for controlling many types of algae in freshwater aquariums containing live plants and fish. Keeps freshwater aquari...

Aquarium Algaecide that is EPA-registered as reef-safe. Algaefix Marine controls many types of algae in marine & reef aquariums. It will not...

Salicylate test measures ammonia levels in both fresh & saltwater aquariums. Ammonia, the #1 killer of tropical fish, is continually prod...

Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API AQUA ESSENTIAL water conditioner. Tap wat...

Treat your tap water, and provide a safe environment for freshwater fish instantly and easily with API AQUA ESSENTIAL water conditioner. Tap wat...

Tests tap water & fresh or saltwater aquariums for carbonate hardness (KH). Helps prevent fish stress caused by rapid pH shifts, the resu...

FIN & BODY CURE treats common bacterial fish diseases such as fin & tail rot, body slime, cloudy eyes and gill disease. Aquarium filtrat...

An all natural salt, made from evaporated sea water. Helps improve gill function to reduce stress. Reduces electrolyte loss and promotes healthy...

An all natural salt, made from evaporated sea water. Helps improve gill function to reduce stress. Reduces electrolyte loss and promotes healthy...

Lowers pH and makes aquariums more acidic. Fast-acting, colorless, easy-to-use and will not cloud or color aquarium water.

Lowers pH and makes aquariums more acidic. Fast-acting, colorless, easy-to-use and will not cloud or color aquarium water.

The API® pH TEST KIT monitors pH to maintain healthy freshwater conditions in your tank. pH control is imperative to prevent the harmful eff...

Liquid pH Control. pH Up is fast acting and colorless, it raises pH and makes water more alkaline without clouding the water.

Liquid pH Control. pH Up is fast acting and colorless, it raises pH and makes water more alkaline without clouding the water.

Quickly clears cloudy pond water by causing tiny suspended particles to clump together, forming larger particles that fall to the bottom and are si...

Treat your tap water, and provide a safe environment for koi fish instantly and easily with API POND AQUA ESSENTIAL water conditioner. Tap water co...

All-natural sea salt improves gill function, protects against nitrite toxicity & reduces stress by helping maintain a natural balance of ele...

Easy-to-use, fast dissolving powder that automatically sets and stabilizes pH while neutralizing chlorine and detoxifying heavy metals. Contains...

Easy-to-use, fast dissolving powder that automatically sets and stabilizes pH while neutralizing chlorine and detoxifying heavy metals. Contains...

Easy-to-use, fast dissolving powder that automatically sets and stabilizes pH at 7.5 while neutralizing chlorine and detoxifying heavy metals. C...