Kordon Methylene Blue-General Disease Prevention Treatment for Aquarium

It seems to work but it stains everything in the tank.. all my rocks have turned blue

this stuff stains anything it touches. it’s literally like blue dye. but it does the job, just gotta be careful pouring it

Nice

This stuff works miracles for nitrate poisoning. The packaging is terrible though! It leaks badly. I keep it in a plastic fish bag with a paper towel in with it, and the bag tied shut, and I try not to let it tip over. Other wise it leaks really badly. I lost about half a bottle that way last time I got it, and didn’t want to order again, but it’s the most reasonably priced Methylene blue for aquatics so I finally gave in. I will probably store it in a different bottle though, like an empty bottle of Prime or something.

This stuff works for fungal infections and parasites in fish! I love it. Instead of removing my carbon and staining the whole tank blue, I do dips. Fill a 5 gallon bucket with 3 gallons, add 5 teaspoons and dip the effected fish for 10 seconds, then put them back in the tank. I use this to treat discus which are very sensitive.