API Quick Testing Strips 5 in 1 (4 pack) The quick and accurate way to test for pH, Nitrite, Nitrate, General Hardness and Carbonate Hardness in one easy step.  Highly precise colour charts assure accurate test results. Dip strips...

API Reef Master Test Kit 4 in 1 Measures the most important aquarium levels quickly and accurately. Benefits: Tests Calcium, Carbonate Hardness (KH), Phosphate, and Nitrate Fast, easy, and accurate for precise test results Compact to store...

API Quick Testing Strips 5 in 1 (25 pack) Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API pH TEST STRIPS for freshwater and saltwater aquariums. Testing water parameters weekly helps...

API pH High Range Test Kit - Fresh/Saltwater 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, resulting from fish waste and the build-up of natural...

API Deluxe pH Test & Adjuster Kit  Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API pH TEST STRIPS for freshwater and saltwater aquariums. Testing water parameters weekly helps...

API Ammonia Test Kit    Quickly and easily check your aquarium's ammonia levels with API AMMONIA TEST STRIPS. Fish continually release ammonia into the aquarium through their gills, urine and solid waste. Uneaten food and decaying...

API Saltwater Master Test Kit Protect marine fish and invertebrates from unsafe water conditions with API SALTWATER MASTER TEST KIT. Fish waste, uneaten food, plant refuse and other organic compounds can create harmful levels of ammonia,...

FRESHWATER MASTER TEST KIT Measures the most important aquarium levels quickly and accurately. 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...

API Phosphate Test Kit    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 freshwater and saltwater aquariums. Testing water parameters...

API Calcium Test Kit - Freshwater/Saltwater Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of encrusting algae need calcium to grow and...

API Copper Test Kit - Freshwater/Saltwater Copper, a common treatment for many parasitic infections, must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a...

API KH Hardness Test Kit - Freshwater/Saltwater 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 freshwater aquariums. API CARBONATE HARDNESS TEST...

API GH/KH Hardness Test Kit  Keep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy-to-use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent...

API Nitrate Test Kit - Freshwater/Saltwater The Nitrate Test Kit tests for harmful nitrate levels from 0 to 160 ppm.   Keep your fish healthy and thriving by testing your aquarium water's NO3 levels regularly with this...

API Nitrite Test Kit - Freshwater/Saltwater 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 and saltwater aquariums. Testing water...

API Ammonia Test Kit - Freshwater/Saltwater Taking a few minutes each week to maintain and monitor aquarium conditions is the key to a healthy aquarium.   Tropical fish continually release ammonia into the aquarium through their...

API Deluxe pH Test & Adjuster Kit  Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API Freshwater Aquarium pH Test Kit. Testing water parameters weekly helps prevent invisible water...

Aqua One Quick Drop Test Kit - Calcium CA (92059) Measuring dissolved carbonates and bicarbonates this test kit will very much aid you in creating PH stability in your set up. A compound buffer may be used to increase KH levels. Contains 60...

Aqua One Quick Drop Test Kit - Iron FE (92058) Toxic to corals and a key algae nutrient in any set up phosphate should be maintained as near to zero as you can get it. Contains 60 tests  Includes colour chart  Step by step...

Aqua One Quick Drop Test Kit - Phosphate PO4 (92056) Toxic to corals and a key algae nutrient in any set up phosphate should be maintained as near to zero as you can get it. Contains 60 tests  Includes colour chart  Step by step...