About this item 7-in-1 pond test strips : Pond test kits can effectively detect pond cleanliness and protect fish health. Seven of the most important parameters can be tested, including the hardness of the pond water, carbonate chlorine, nitrite, free chlorine, pH, nitrate and alkalinity. Let you know how to create a healthy environment for your fish. Multiple uses : Our pond test suite includes 100 pond pH strips for fresh water and salt water. Suitable for aquarium, fish tank, pond, etc. Easily monitor water quality. Minimize fish loss to the greatest extent possible. Easy to use : Just immerse the fish pond test paper in water and wait for 2 seconds, remove it and hold it horizontally for 60 seconds to obtain the results, and then compare it with the color card. Helps prevent any invisible water issues and ensure the safety of your fish. Easy to carry : 100 aquarium test papers are packed in a convenient bottle. Economical and easy to carry, it can be tested anywhere according to your own needs. High quality product : The fish tank test strip is made of high-quality fiber paper, which can avoid color leakage between the mats. There is no confusion when reading the results. Can provide reliable and accurate results.