
I used Tetra test strips and an API master test kit and 9 in 1 test to make sure the values were at least close to the same. General tests were total hardness, nitrite, nitrate and pH. The 9-in-1 streaks were consistent and significantly lower than the other two. I tested the pH in the calibrated solution and it didn't change color at all. I bought it for the metals (copper, lead and iron) but I can't trust it.

FUNSWTM 7 in 1 Aquarium Test Strips: Accurate Water Testing for pH, Nitrite, Nitrate, Chlorine, GH & KH Levels
8 Review

π Hanna Marine Alkalinity Checker HC - HI772: Accurate & Efficient dKH Measurement
9 Review

π§ͺ Enhanced API Replacement Test Tubes with Caps - Ideal for API Freshwater Master Test Kit - 24 Count Box
8 Review

Fish Water Quality API Test Kit
9 Review

Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review

π§² Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review

Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review