Simply Koi and More Koi

Hi all

Whats the earlist i can do a water change in the pond after treatment and still get a full kill please ?

Need to put one Goldfish back in the pond i,ve had for Donkeys years , can,t find any flukes on the Goldie .

Thanks

I used to say one week with SV so yes one week

Thanks Dunchan .

I know its not used as often these days but flukes for me every year is a nightmare and it worked last year and is ok with sturgeon .

Mel