Methylene Blue

Methylene Blue

Methylene Blue Information

This is a stock item that should be in every aquarist medicine cabinet. Also is the blue dye for tie-dye projects.

Methylene Blue Composition

3,7-bis(dimethylamino)-phenazathionium chloride

Methylene Blue Synonyms

Methylene blue-B; Methylthionine chloride; Urolene blue

Methylene Blue Uses or Treatment for

Dye; antifungal agent on fish eggs; fungicide(Saprolegnia); external protozoacide [Ambiphyra(Scyphida), Chilodonella, Costia, Cryptocaryon irritans, Epistylis, Ichthyophthirius, Oodinium, Trichodina(Cyclochaeta), Trichophyra ]; Monogenetic trematodes(Cleidodiscus, Gyrodactylus).

Methylene Blue Administration and Dosage

  1. 2 ppm daily
  2. 3 cc of a 1% solution in 10l of water as long duration bath (3-5 days)
  3. 10ppm not effective
  4. 50ppm is inhibitory
  5. 3ppm
  6. 0.15ppm CuSO4 – Citric Acid -0.2ppm Methylene Blue at 5-day intervals, 3 times, for marine
  7. 5ppm
  8. 1.0 tp 3.0ppm in water for 3 to 5 days
  9. 0.2 to 0.4cc /l (of a stock solution of 1gm to 100cc water)

Methylene Blue Observations, Notes, Remarks

When I make my stock solution, I add 7.5gm(1Tblsp) to 1 gallon of water