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Hi! I'm completely new to keeping an aquarium and am a bit lost on how to read the test results for my ammonium and nitrite levels. I am trying to do fishless cycling of my 10 gallon tank. When I check for nitrite, however, I can't tell if it's beginning to appear or not. When I hold the test vial up to the sunlight, it looks like the color that indicates there is no nitrite (yellow), but when I hold the vial up against a white background, it appears more orange-ish. Wish is more accurate - the color when held up to the sunlight or should I put the test up against a background? Thanks so much for any info!!!