Been treating my betta with tetramycin for 4 days, water changes as instructed, and today was the last day! yahoo! Ugg the ugly color of the water! On this last day I did 100% water change instead of the instructed 25% and add carbon filter, so now my tank is crystal clear and my betta is soooo happy! Dancing all about and like 'mom, what were you thinking before!' He's rewarded me with bites and chasing. And oh so funny, he now flares like crazy if I put 3 fingers in his water. 1 finger, chase or being fed, 3 fingers, FLARE.
that's tetracycline actually, but in human medicine, it's tetramycin:) same class of abx.