Wow. I've always heard they were inaccurate, but now I know exactly how bad they are. Not sure if they have expired but the badge is valid until 05/2021 so I doubt it. Followed the instructions to T and got the same results twice. Both tests showed my pH as 6.0 which I checked and monitored daily at 7.5 for my fancy goldfish. I used my liquid pH test from the API Master Kit which I used regularly and of course still at 7.5. The stripes literally didn't change before or after the dive. Nitrites in my tank are 0 but nitrates are 5-10ppm (although I don't expect an inaccurate test strip to show that too) but it didn't detect any hardness either. I received the strips for quick stiffness testing. but obviously not even good for it, do me a favor and don't buy, $6 for 4 useless strips is a waste.
Fish Water Quality API Test Kit
9 Review
π Seachem Stability 250ml: The Ultimate Fish Tank Stabilizer for Freshwater and Marine Aquariums
9 Review
π Hanna Marine Alkalinity Checker HC - HI772: Accurate & Efficient dKH Measurement
9 Review
π¦ Comprehensive Water Quality Analysis: ICP 33-Elemental Test Kit - Single Sample Kit
9 Review
𧲠Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review