API

API makes water care products for freshwater and saltwater aquariums and garden ponds — the treatments, tests and foods most fishkeepers use week to week.

What You'll Find Here

  • Test kits and strips — Master Test Kits for freshwater, saltwater, reef and pond, plus single-parameter kits for ammonia, nitrite, nitrate, pH, KH, GH, phosphate, calcium and copper
  • Water conditioners — Stress Coat, Tap Water Conditioner, Aqua Essential and Ammo-Lock
  • Bacteria and cleaners — Quick Start, Stress Zyme and pond sludge destroyers
  • Treatments — Melafix, Pimafix, Super Ick Cure, Algaefix and Turtle Fix
  • pH and hardness — pH Up, pH Down, Proper pH buffers and the Water Softener Pillow
  • Filter media — activated carbon, Bio-Chem Zorb, Phos-Zorb and Bio-Chem Stars
  • Plant care and food — Leaf Zone, Root Tabs, CO2 Booster and pellet and wafer foods

Choosing Products

  • Start every new tank with a water conditioner and live bacteria, then test ammonia and nitrite during the first weeks.
  • Check whether a product is for freshwater, saltwater or ponds before buying.

Good To Know

  • Remove activated carbon from the filter while using medications, and follow label doses exactly.
  • Doses on US packs are in US gallons — 1 US gallon is about 3.8 litres.

Showing 73–84 of 88 results

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API Betta Water - 31oz

The API Betta Water 31oz is pre-conditioned, ready-to-use water made for betta bowls and small tanks.Key Features Ready to pour straight in Balanced for bettas, with low mineral content Free from...

API Ammo-Lock Ammonia Detoxifier - For Aquarium

The API Ammo-Lock Ammonia Detoxifier is a water treatment that locks toxic ammonia into a non-toxic form, for emergencies in freshwater and saltwater aquariums.Key Features Detoxifies ammonia straight away For freshwater...

API Pond Wide Range pH Test Kit - 160 Tests

The API Pond Wide Range pH Test Kit 160 Tests is a liquid test kit that measures pond water pH across a wide range, from 5.0 to 9.0.Key Features Measures pH...

API pH Test Kit - For Freshwater Aquarium - 250 Tests

The API pH Test Kit 250 Tests is a liquid test kit that measures pH in freshwater aquariums, from 6.0 to 7.6.Key Features Measures pH from 6.0 to 7.6 250 tests...

API pH Test & Adjuster Kit - For Freshwater Aquarium - 250 Tests

The API pH Test & Adjuster Kit 250 Tests is a freshwater pH test kit supplied with pH Up and pH Down, so you can test and correct pH with one...

API Nitrite Test Kit - For Aquarium - 180 Tests

The API Nitrite Test Kit 180 Tests is a liquid test kit that measures nitrite in freshwater and saltwater aquariums, from 0 to 5ppm.Key Features Measures nitrite from 0 to 5ppm...

API High Range pH Test Kit - For Aquarium - 160 Tests

The API High Range pH Test Kit 160 Tests is a liquid test kit that measures high range pH in saltwater aquariums and African cichlid tanks, from 7.4 to 8.8.Key Features...

API Pond-Zyme Sludge Destroyer - 8oz

The API Pond-Zyme Sludge Destroyer 8oz is a bacterial and enzyme pond cleaner that breaks down fish waste, dead algae and sludge.Key Features Selected bacteria break down fish waste and dead...

API Pond Simply Clear Water Clarifier - 16oz

The API Pond Simply Clear Water Clarifier 16oz is a bacteria-based pond clarifier that clears cloudy water, consumes sludge and helps break down algae.Key Features Clears cloudy pond water Consumes sludge...

API Pond pH Up - 16oz

The API Pond pH Up 16oz is a pond water treatment that raises low pH.Key Features Raises low pH in pond water Dosing cap for measured doses For ponds with fish...

API Pond Microbial Algae Clean - 16oz

The API Pond Microbial Algae Clean 16oz is a bacteria-based pond treatment that controls green water algae and breaks down dead algae and organic sludge.Key Features Uses beneficial bacteria rather than...

API Pond Melafix Fish Treatment

The API Pond Melafix Fish Treatment is a natural melaleuca-based pond treatment for bacterial infections on pond fish, such as wounds and fin rot.Key Features Used for bacterial infections, wounds and...