Amazon.com : Tetra EasyStrips 6-In-1 aquarium Test
Tetra Aquarium Test Strips work quickly to provide accurate results and help you to treat your aquarium effectively. Test Strips come in three varieties that offer varying benefits; including 6-in-1 Easy Strips that offer complete testing in only 60 seconds, and Ammonia EasyStrips that specifically test ammonia levels in your aquarium.
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