I got my kit yesterday and was proceeding to do a FC test. Water turned pink then added the agent to make it clear....well, after it turned clear I began to record the number and looked again and it started to turn just a little bit pink tint again. I added a couple more drops and it finally stayed clear. I assume I count the number of drops it takes to keep it clear or is it normal to have a pink tint once it sits for a bit? Thanks
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