Review on 🔬 Comprehensive 5-in-1 Aquarium Test Sure Kit - pH, Nitrates, Nitrites, Carbonate General Hardness (50 Strips/Bottle) by Jamie Dawson

I have been running my aquarium with these strips for a few months now. Thinking that nitrates and nitrites would keep going up, I changed the water many times. Then these boxes (on the strip) took on a color not even visible on the bottle. Bought API strips for comparison. Turns out I have great water. Went to the pet store today to get another opinion (they use a different brand of strips). This read matched the API read. I brought these strips and checked them at the same time as the test. People at the store suggested that these strips might be outdated. The date on the bottle is September 4, 2019. I kept it tightly capped and quickly closed it after removing the strip. Lesson - don't buy this.