There is an error in the description of the product in the section: Mode of application 5 ml for every 10 liters of aquarium water On the label: 5 ml for every 10 liters of new tap water directly into the aquarium These are very different things, since you are changing, most likely 25% of the water, and you need to calculate by the volume of water changed, and not by the volume of the aquarium.
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 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
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review