I was reading some 30 year old Aquarium Digest mags, and the ads are really cool back then.
One of them was for water dyes, saying that they helped comfort fish by emulating their natural environment. They had dark coloured ones, red, blue, etc. Really neat.
Yours is definitely methylene blue, a dye that has anti-fungal properties... but reminded me of that
One of them was for water dyes, saying that they helped comfort fish by emulating their natural environment. They had dark coloured ones, red, blue, etc. Really neat.
Yours is definitely methylene blue, a dye that has anti-fungal properties... but reminded me of that