I inherited about a 700 gal pond with my new home and I would like to add some fish. It's been running off and on through the winter and spring and now I've had it running full time for a couple of weeks. I've checked the ammonia, nitrite, ph and nitrate and everything looks good. The main question I have concerns adding water. Do I need to dechlorinate my water in buckets before I add it to the pond? Or can I add the dechlorinator to the pond after I replace the water with a hose?