[aquitori]

Quote: Originally Posted by Jim Lahey Since the pond is so deep, I would have to drain quite a bit. Do you think it is a safe thing to do - change about 40% of the water when I have a couple of new koi in the pond? I dont want to disrupt or stress them out too much...What do you think?

How many new koi do you have in the pond and how big?
How old is the filter of your pond?

Either way I see it is that your going to stress out all the fish in your pond chasing the goldfish around with your net in the pond.