API 5-in-1 Test Strips

API 5-in-1 Test Strips give you a quick read on five water values from a single strip: pH, nitrite, nitrate, carbonate hardness (KH) and general hardness (GH). You dip a strip in tank water, wait, and compare the pads to the color chart on the box. API makes them for...

Milwaukee MA887 Digital Salinity Refractometer

The Milwaukee MA887 is a digital refractometer made for one job: measuring the salinity of natural or mixed seawater in saltwater aquariums and reef tanks. Instead of squinting through an eyepiece at a blue line, you put a few drops of tank water in the sample well,...

Salifert Alkalinity Test Kit

Why we recommend the Salifert Alkalinity Test KitAlkalinity is one of the most important and fastest-moving parameters in a reef tank, directly affecting coral skeletons and overall stability. Sloppy, low-resolution kits can leave you guessing, which is exactly why so...
API Freshwater Master Test Kit

API Freshwater Master Test Kit

The API Freshwater Master Test Kit is a set of liquid reagents and glass tubes for testing aquarium water at home. It covers the readings that matter most in a freshwater tank: pH, ammonia, nitrite and nitrate. You fill a tube with tank water, add drops, shake, wait...