I recieved a betta fish from my brother-in-law about two weeks ago. He passed away earlier this week and I had to leave my betta for about three days to help my sister. I figured he would be okay and asked my roomate to feed him, but when I returned, he had a bloated stomach and his scales are starting to stick out. I looked up the symptoms and got dropsy.
I just moved into college and I have very few resources. I'm not sure where the nearest aquatic store is. I read that treatment with antibiotics was a good way to get rid of dropsy and also read that if it isn't treated quickly, it can turn fatal fast. Having little time and trying the best option, I broke one of my minocycline pills in half and poured the powder into his tank.
Did I just do something incredibly idiotic?
His water has a yellowish tint now, does that mean I put too much in?
I don't know what to do and I can't ask my brother-in-law. He WORKED in a fish store, he knew everything. I don't want to lose my last link to him.
EDIT: Some additional info - Water is generally warm enough, I don't have thermometer for temperature but it's a little above room temp, as Toki's water gets warmed up for half the day when the sun reaches my side of the building.
His water was in very bad condition when I got back from the weekend, so I changed out the whole tank and washed out all of the gravel.
He is usually a VERY lively fish, always gets really excited when he knows he's about to get fed. Now he is a bit lethargic, though he is not hanging around any specific part of the tank. He's floating about, though slowly. His stomach is pretty bloated.
His diet consists of about five Seachem Betta Banquet pellets per day.