Methylene Blue 1% 1L

Methylene Blue 1% 1L


Methylene Blue is safe for use with fish eggs and fry for the prevention of fungal infections. As a secondary use, it is effective against some external protozoans, such as Ichthyophthirius (Ich), Chilodonella and Costia.

The properties of the drug as an oxygen transporter (it converts methemoglobin to the normal oxygen carrying component of fish blood, hemoglobin) allow it to be used in the treatment of known cyanide and nitrite poisoning of aquarium fishes. It has been suggested that newly arrived marine fish placed in Methylene Blue can have their survival rate increased as Methylene Blue aids in the reversal of nitrite and/or cyanide poisoning.

A mild antiseptic used for fungus infections and useful as a long duration treatment for disease.

Used as a preventive cure against fungus on eggs. Very commonly used as a treatment for post travel stress and gill damage and disease.
Remove activated carbon from filter during treatment, Replace with new carbon once dosing is complete.


Clinical Signs
Increased respiration; loss of normal body color; presence of discrete white spots (freshwater or marine Ich); scratching on tank bottom or on objects; lethargic behavior; white tufts or strands on body [Fungus]; dustlike “peppered” spots on body surface, having a yellowish cast [Oodinium].

Methylene Blue is not indicated for the treatment of Oodinium, bacterial infections, flukes (monogenetic trematodes) or for moderately-severe to severe fungal infections. It is not indicated for use as a net disinfectant or sterilizer.


1ml per 20L

Please note this cure may damage live plants and stain aquarium silicone.