Biozym Methylene Blue is a long-established freshwater treatment for aquariums and fish tanks. It helps treat fungal and bacterial infections on fish and eggs, and supports fish that are struggling to recover — a useful option for hospital and quarantine setups.

Good to know:
– For freshwater aquariums, hospital tanks and quarantine fish tanks.
– Protects fish eggs, making it handy for breeders and new fish arrivals.
– The blue tint shows how much treatment is in the water, so dosing is easy to judge.
– May affect plants, invertebrates and beneficial bacteria, so dose carefully.
– Available in 150ml and 350ml bottles.