Freshwater Frenzy: How to Read Aquarium Water Test Strips
Test your water How do I use my Tap Score chlorine testing strips? Dip your strip into a glass of water (not your sampling container!) and move it back and forth for 30 seconds. Alternatively you can hold it under a stream of water for 10 seconds. The pads will change color to indicate Total Chlorine (white pad on end) and Free Chlorine (yellow pad).
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