It sounds weird what happened.
As was already said, small fish shouldn't have died that quickly.
When I started my QT tank, I used a cycle sponge but I still had ammonia spines when I added my fish in as the songs didn't have enough bacteria to handle the loaload. By testing and adding prime to detoxify ammonia , I've made it work.
What are your water parameters?
As was already said, small fish shouldn't have died that quickly.
When I started my QT tank, I used a cycle sponge but I still had ammonia spines when I added my fish in as the songs didn't have enough bacteria to handle the loaload. By testing and adding prime to detoxify ammonia , I've made it work.
What are your water parameters?