200ml/500ml Methylene Blue Concentrate for Aquarium Disinfection Sterilization Treat White Spot Fungus Tail Rot Water Cleaner

Dosage:1. Add 100 liters of water to 10 ml (5 ml for small fish).2. Use this product once every 10-15 days according to the situation, which is conducive to creating a good growth environment for ornamental fish.Precautions:When using algaecide, it is necessary to add oxygen to the aquarium, so as not to consume a large amount of oxygen in the water after a large number of algae die, causing other organisms in the water to suffocate due to lack of oxygen. Do not use it at the same time as water purifier.For aquarium use only, keep out of the reach of children.