After 5 oxygen tests with this product the water was clear which means there is no oxygen in my pond. I have 2 large air pumps with working air stones. I have an Oase pump and a working filter. I have a fountain in my pond. Yes, there is oxygen in my pond. This test product is useless and does not work. I contacted the company that made this product and never got an answer as to why this test didn't work.
Fish Water Quality API Test Kit
9 Review
💦 Comprehensive Water Quality Analysis: ICP 33-Elemental Test Kit - Single Sample Kit
9 Review
Highly Efficient Seachem Purigen for Freshwater & Saltwater Filtration
9 Review
FUNSWTM 7 in 1 Aquarium Test Strips: Accurate Water Testing for pH, Nitrite, Nitrate, Chlorine, GH & KH Levels
8 Review
🧲 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
Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review