Jungle TK301W Quick Dip Test Strips Ammonia, 25-Pack

I use these in conjunction w/ the 5 in 1 dipping sticks to monitor the health/status of our 55 gallon fish tank's water. Easy to use will continue to purchase.

I have high ammonia levels and I need to keep track of them. The only thing I have an issue with is that at the end of the test strip, there are 3 little squares to look at the colors you are comparing. The very bottom one is the only one that changes colors and it makes me wonder why there are those other 2 squares.

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They work well and are simple to use. I always compare readings w/tap water which has no ammonia and my aquarium water, which has ammonia.

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