Amazon.sg:Customer reviews: ULTIMATE 14-in-1 Aquarium Test Kit with Trace Heavy Metals | 50 Water Testing Strips for Fresh-Water or Salt-Water Aquarium, Fish-Tank, Reef & Pond | Alkalinity, pH, Nitrate, Carbonate Hardness & More
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I bought this product for my fish tank. I found its result can be pretty misleading. Based on its result, I purchased a alkalinity/carbonate booster product. However, i noticed there was just no change in Carbonate hardness test color even though I kept adding more of carbonate booster to the tank. I got skeptical on its accuracy. Then I purchased a different test product also from Amazon trying to do a comparison. What a difference !. The new tester showed that the KH value already over the normal range. I further tested this bad 14in1 tester on tap water and some mixed water. The only 3 tests with a response are "total alkalinity", "PH", and "Total Hardness". There are completely no change of color in the rest 11 tests no matter what type of water was tested. Not sure whether the whole product is bad. But I can definitely say that the bottle I received is a defect.
Never detects nitrates or nitrites. Useless since I didn't want to have to buy multiple products to test my RES aquarium water. Doesn't detect copper yet my turtle's shell has copper integrated into it. I need to have a professional well water test done to check for copper since it's obvious we have copper in our water.
I was able to test this compared to 2 other brands of test strips and a liquid test kit and found the water parameter readings were off, sometimes by a lot. I'm not sure if the metal readings are accurate, as I haven't had a way to compare those yet, but I definitely would NOT recommend these strips for testing nitrates and total hardness especially.