Dying fish

[Gemini2309]

When we moved to our house in 2015, we had a koi and a large goldfish in the pond these bred and made hybrid koi x goldfish however when we came to the pond a few months later we found 30 of them at the top of the pond dead as well as the original goldfish. Since then we have tried to introduce six shubunkins and another koi as our koi has been in there by himself and only 1 has survived and that was a shubunkin. Why are all my fish dying?

 

[Tula]

Welcome to the forum Gemini

To better help you, it would be good to know more about your pond....how many gallons, what type of filtration, climate etc. ?

 

[j.w]

@Gemini2309
Would be good to do testing of your water before someone can try and help you. Do you have a test kit?

 

[addy1]

Welcome to our group.

Post a picture of your pond, size etc. That will help us help you.

 

[mgmine]

It would appear that something is wrong with the water but it could be a fish got sick and the rest caught it. Possibly some chemical got into the water from the surrounding gardens. It could be this or that or anything in between. I doubt that testing the water will solve your problem, at least with a $10 dollar test kit. I would drain the pond and clean it and get rid of the fish in it and start over again. If the same thing happens then you at least know it's not any of those things.