That person assumed, the ozone was added three days earlier and should have been dissipated by then. |
They knew the sharks were swimming at the top and they were trying to get them to swim deeper. It would be more stressful to the (remaining eight sharks) to take them out. |
We're still investigating why the ozone was still in the water and why it wasn't detected before it was released into the aquarium. The ozone sensor on that (recovery) tank seems to be correct, so we don't think it's a mechanical error. |