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Methylene Blue

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$7.99
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$7.99
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  • Prevents fungal infections on fish eggs
  • Treats nitrite and cyanide poisoning in fish
  • Treats fungus and external protozoan parasites on fish

Methylene blue is commonly used by fish breeders to prevent and treat fungal infections on fish eggs, as well as treat fish with cyanide and nitrite poisoning. As a secondary use case, it can help treat superficial fungus and some external protozoan parasites on fish. The disease symptoms can include white tufts or strands on the body (fungus) and scratching on the tank bottom or objects (external parasites).

Royal Medicine Methylene Blue

Treat Egg Fungus

A Little Goes A Long Way

small_meth_blue_catch_cup_corydoras_eggs
Aquarium Co-Op Breeding Supplies Aquarium Co-Op Unbreakable Catch Cup

Improve Your Hatch Rate

Customer Reviews

Based on 20 reviews
90%
(18)
10%
(2)
0%
(0)
0%
(0)
0%
(0)
E
Emily R. (Frisco, TX, US)
Excellent for Preventing Fungus On Eggs

Relatively hard to find and works super well. Definitely recommend if you plan on breeding fish.

D
Don (New York, NY, US)
As Advertised Quick Shipping

Solid product got here fast!

W
Wade L. (Indio, CA, US)
Medications On-Call

Taking Cory's advice to ensure I have all the necessary medications and treatments on hand preemptively.

T
Tim D. (Great Falls, MT, US)
Great product

Great product for keeping fungus off your fish eggs till they hatch. Highly recommended and highly recommended Aquarium Co-Op.

F
Francis H. (Phoenixville, PA, US)
Important Tool in a Fish Breeders Tool Box

Glad to see the Co-op carrying these harder to find products, keep up the great work!