Fish dying in outdoor pond

Question

I bought 12 feeder comets from local petstore. I woke up this morning and one was dead. I removed it right away but an hour later 4 were dead and one was floating but slightly moving. later it was dead. Please help.

-165 gal pond

-used chlorine remover , pond salt a day before adding the fish

-days are 80-100 degrees

-ph is 7.3

Answer 1

i have a lot of fish in my pond and plenty of room but the most important thing i found is to cover half of the pond with an old tent in the winter and leave the pumps runnig all year its the beginnig of spring but still chillie so i wont remover the cover yet but my fish have survived the last two cold winters i checked undear neath this week to make sure their ok and i have a new friend to a frog whos just starting to come up for spring. i dont have a heater i just use the heat from my 3 pumps and the pond must be right as i have other animals coming  hope your fish are ok now