I've been using API Test Kits for over 14 years and have always found them quick, easy, reliable and inexpensive. If you are just starting out with a pond or aquarium, consider purchasing an API Master test kit. The API Freshwater Master Test Kit is a comprehensive kit that is cheaper than buying individual bottles. * The master test kit contains *ammonia, *nitrite, *nitrate, *pH and *high range pH test kits. You still need to buy KH, GH test kits separately. Although not included in the main test kit (I've always wondered why), KH/GH tests are equally important to the balance and maintenance of your pond.
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