HI everyone! So we have been struggling with our older (2yr) betta for over a month now. We have had him over a year and at time of purchase he was gray with some fin Got. Our 5 gallon tank with filter and heater was cycled and rubbing a couple months prior to purchase. A month ago we got a nernite snail, two weeks later Carl fell quite ill. Fins slightly ragged but mainly sinking at bottom. We removed the snail over the next couple of weeks he became shocky white. Naturally he is all silver with red fins and age spots on his head so his body didn't change much color but fins became pale as well with heavy breathing and on bottom of tank. For the past month we have done 25% daily water changes he has been treated for parasites w/ metronidazole/prazquiantal powder, no change, baytril baths extended course (7days) no change, betafix 7 day treatment no change (tea tree oil) no change, melafix (different oil) no change (did 5 days a different time), did the fasting in case swim bladder and pea (no change), general cure no change. We have given him a couple days between the fungal and bacterial treatments. Somehow I also most my cyce and for 21 days straight my water is as follows ammonia 0.25 nitrate 0 nitrites 0 PH 7.2 and water temp maintained at 78. Water is treated with prime diet is pellets and frozen blood worms occasional brine shrimp. Have never over fed but not sure if anyone has any other ideas. My aquatics vet is also unsure why he isn't responding to any treatment, with the expectation of he did stop eating for a few days but with stress guard he improved and he eats but you have to sink the food to him, he finds it with assistance and readily eats but waits for it to fall. He occasionally swims up for air but rare. In his tank he has a floating moss ball, three small moss balls, a cave, air stone, heater, theometer, 1 live plant, 1 silk plant, and his filter is a bubbler foam filter (forgot the name). I know he is older but I have had Betas up to 5 before, and this guy came sick and immicated but after 6 weeks was back to perfect heath and now almost a year later is emmicated terrible and just so lethargic. Any suggestions or thoughts, or how my tank seem to loose his cycle since I get zeros across the board almost I would greatly appreciate it.
