Well, I'm loosing yet another Molly to swim bladder desease. (5 now). The only think I can think of is that the water here is super hard ( hardest in the strip). Parameters are ok, ammonia 0.25(not perfect), nitrites 0, nitrates around 5-10. I'm changing water daily with prime and today I had to take him out and put him the almost cycled qtank because the other male was really attacking him!!!! Never seen him do that. I'm at a lost. Can I treat the water? Could that cause swim bladder problems?