Hello I am new to the exciting betta world. I have 4 male crown tail bettas and 4 female bettas. One male about 2 weeks ago starting acting different. He would swim to the surface and them would be on the bottom of the tank as if his tail was too heavy. About a week ago a second male betta starting acting the same way even though they are on different tanks. I read about swimm bladder disease and gave them peas, made the water temperature warmer, used epson salt, and made several water exchanges in their tanks. One of them, came out of it, but the other did not. I also have 65 betta babies, 1.5 months old that have started to act the same way, as well as an adult female. What causes swim bladder disease? Is it nutritional, a lack of calcium, vitamins? Can the food I am feeding them make them sick? My water temperature in the tanks is about 22Celcius. Please help!!!
Thanks. Betta rookie 76