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

The API® COPPER TEST KIT allows you to easily and accurately monitor copper levels to maintain copper-based fish treatments at therapeutic le...

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

Tests tap water & freshwater aquariums for general hardness (GH) and carbonate hardness (KH).Helps prevent fish stress caused by rapid pH...

Use to measure pH changes in marine aquariums, aquariums with African chchlids, and very alkaline tap water. Reads the pH of water within the...

Tests for nitrite in freshwater & saltwater aquariums. Nitrite, toxic to fish, is produced by nitrifying bacteria in the biological filte...

Phosphate can enter your aquarium through tap water, fish waste, and decaying organics such as uneaten food and dead algae. Excess phosphate ...

API Pimafix fish remedy is an all-natural, antifungal remedy for fish fungal infections, with a formula derived from the West Indian Bay Tree –...

All-natural API® POND SALT is made from evaporated sea water, and provides essential electrolytes that fish need to survive. Salt improves gill fun...

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

API Root Tabs plant fertilizer promotes lush growth of aquarium plants with ingredients such as iron, potassium, and carbon that help develop st...