giobelkoicenter.com
The top 10 reason is why salt in koi pond can be dangerous to your koi fish
Salt can cause more trouble in your koi fish if not taken out from your koi pond. Why? salt kept in a pond all year can cause the parasites that plague your Koi to slowly but surely build up a resistance to the salt.This will make it harder than ever to kill off the parasites and rid your fish of them once and for all.