My Gracie has always jumped. I don't know if she's ever cleared the water, but she's been up pretty high. It's usually at night. I always thought she was fetching bugs. My other Koi has never jumped. Well, not that I've seen. We have an old screen door on the back door close to the pond. The kind that has one of those metal springs, it slams loud every time someone goes in or out of the house. The fish are so use to it now, they come up to get fed. Guess they think every time someone comes out, it's for their benefit. After awhile, they will get use to noise (or vibrations) not sure if they can actually hear.
We have actually had a current leak in our saltwater tank. Didn't know it til I stuck my hand in their to do something and felt it. It must not of been strong enough to hurt the fish or corals. Just did the process of elimination and found out it was a bad power head. But, yes it can kill your fish if strong enough.
We have actually had a current leak in our saltwater tank. Didn't know it til I stuck my hand in their to do something and felt it. It must not of been strong enough to hurt the fish or corals. Just did the process of elimination and found out it was a bad power head. But, yes it can kill your fish if strong enough.