This is a very affordable item although chemical droplet colors are faint and once you add CO2 to your tank you can't really tell the difference.
π¦ Comprehensive Water Quality Analysis: ICP 33-Elemental Test Kit - Single Sample Kit
9 Review
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
Highly Efficient Seachem Purigen for Freshwater & Saltwater Filtration
9 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review