"Randy" wrote in message
news:3zwIc.74815$XM6.22733@attbi_s53...
LAst night my neighbor was topping off his 7700 gallon pond and he
accidently left the water on overnight he lost about 25 of his 50 fish. I
dumped in some water prep this morning but I wonder if there is something
else I can do to save the remining fish. The whole pond is new water
now.Please help.


Definitely need to put in a whole lot of stress coat to get rid of the chlorine.
Geez, I don't know what else you can do. Check the pH, and all the other
parameters, and try to slowly adjust as necessary. But I think he's going to
lose more. Does he have a biological filter? He's going to need to add some
aquazyme or another bacteria starter. Sorry to hear about his loss.