water in our pond has sulfer in it it is the overflow from well we put coy fish i it they all died why?

we have put coy fish in the pond and over two or three week period the fish died is it the sulfer or should i look for other problems we have lots of frogs in the pond and they are really surviving good the plants are doing good too i would like to know what the problem is

Answers:
First test the well water in lab for acidity level and some water contains sulphur which is not good for fish and few acids may e in lesser amount. They also no good for fish. They die.

There may be fishy deal while you procure the fishes to grow in your pond.

Other answers:
Contact your local Cooperative Extension. They can come out and test your water and give pond advice- and it is FREE! Sometimes they are backlogged so there may be a wait.

Good luck!
Contact your local Cooperative Extension. They can come out and test your water and give pond advice- and it is FREE! Sometimes they are backlogged so there may be a wait.

Good luck!
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