Help! My "old" fish are dying!!!

[graciela]

So... What do I do? I keep making WCs daily, conditioning the water with Prime... and.... what is going to make the water clear?

Thank you!

 

[Harlock]

So... What do I do? I keep making WCs daily, conditioning the water with Prime... and.... what is going to make the water clear?

Thank you!

Time. Substrate can bring in dust, etc. Also, since you're showing ammonia and there is an off chance that the thing is building bacteria again it could well be a bacterial bloom.

 

[graciela]

Thanks, Harlock

And bacteria blooms are treated with....?

 

[Harlock]

Nothing. They are normal when the biofilter is trying to (re)establish itself. That may or may not be the problem, but it's what I would lean towards right now given that you're seeing ammonia and covered your old substrate, which could cause some anaerobic pockets in the old gravel, etc.