Had to put down my tetra today due to mouth rot.

[TheZoo]

Melafix is a dilute solution of Tea Tree Oil(melaleuca).
"Tea tree oil can kill many bacteria, viruses, and fungi on contact. This makes it an antiseptic, like betadine, hydrogen peroxide, and many other essential oils. It is not an antibiotic in the common sense, because an antibiotic is absorbed throughout the body....Tea tree oil may be as effective as standard antiseptics for removing resistant strains of staph bacteria from the skin of hospitalized patients. Note: This does not mean tea tree oil is effective as an antibiotic for staph. It is an antiseptic. Antiseptics work on the surface of the body, while antibiotics work from within."
http://www.thirdage.com/healthgate/files/21867.html

Watermelon, so you have tried to treat things with water changes, or no?

 

[gmiller1122]

Thanks for the feedback, everyone.

I usually do a water change every month or so, but since this problem arose, I have been doing them more frequently -- about 25% every 10-14 days.

Thanks again.

 

[TheZoo]

Do them at least weekly, 30% or so. You need to keep the water pristine. There isnt much of a danger of overdoing it, so you could do 2x weekly if you wanted. I might.