If you plan on doing this very often, go to Walmart and get you a RV water filter, hook it to your hose and fill through it. Also will not hurt to put a couple of drops of the chlorine treatment in there also. As CP said you need to let them adjust to the water temp. I usually get mine in a bag. I will just sit the bag in my tank for a couple of hours and let temp adjust real slow before dumping in tank.