Got it! Ok, fill the pond, and dechlorinate. Then add a cup full of the pond water to the fish bucket slowly... put a cupful of fish bucket water in lawn. come back in a bit. put cupful of pond water in fish bucket. Put cupful of bucket water in lawn. do this until you've added at least three times the volume of the bucket to the bucket. Then put fish in pond, bucket water in lawn. Fill bucket with new water, dechlor, add to pond. repeat three times. Done. That way, rambo gets the benefit of slowly changing water, and you get the ease of dechloring the whole pond at once.