So, I took in a betta for one of my troops while he's on leave, and the poor thing started to get duck lip and a large tumor on his head. Near as I can tell, his Sx's were being caused by Flexibacter Collumnaris, so I dosed him with Kanaplex. There was no simple way to mix it with food, so I dosed it directly into the water. The package reads to use it every 2 days up to a maximum of 3 doses. I did, and it seemed like the initial Sx's were getting better.
Just yesterday, I looked in the tank to see how he was doing and... popeye. I just did a 100% water change and the little guy is currently hanging out in a 1 gal jug with epsom salt.
So, my question is this: Should I use more Kanaplex? It says "maximum 3 doses" which I have already met. The medication gives no additional guidance as far as what to do if the Sx's have not gotten better by the time you use 3 doses.
As far as the tank itself, it's a 2.5 gal with hang-on filter and a heater. Normally the water stays around 80 - 85 degrees Fahrenheit, and of course I use tannins and water conditioners. No other livestock in the tank, as it's a new set up and I didn't want to introduce tankmates too quickly.