In this video I run some water quality tests on a newer aquaponics system with the API freshwater master test kit purchased from Amazon.com (link below). This video includes a basic product review of the test kit and a demonstration of the 4 basics tests - PH, ammonia, nitrite, and nitrate.
http://www.amazon.com/API-Freshwater-Master-Test-Kit/dp/B000255NCI/ref=sr_1_1?ie=UTF8&qid=1391783579&sr=8-1&keywords=api+freshwater
http://www.amazon.com/API-Freshwater-Master-Test-Kit/dp/B000255NCI/ref=sr_1_1?ie=UTF8&qid=1391783579&sr=8-1&keywords=api+freshwater
