A dying question?

[shimmy]

Originally Posted by Stevey87

This happened to me one time when my tank was about your age. Everything is fine and one day I wake up and most are dead or breathing heavily on the bottom. The day before, I added a pump and a wavemaker but I think that's just a coincidence. They were one of the hardiest fishes you can get. That never happened to me since then.

did you ever find out what coused them to do so for thats sounds a lot like what was happining to me.