Just wanted to share with you the biggest mistake i have made so far in this pond building process. Probably will not be my only mistake but it has been a huge pain in the rear. I fell for the puppy dog eyes from my youngest daughter when she asked for cute little fluffy ducklings for our new pond. In my defense I never thought they would survive the bobcats, hawks and owls. But so far we have only lost one of the twelve we started with. They eat everything you try to put in the pond from beneficial plants to FHM to sunfish, tadpoles, frogs Everything!!!!. They eat all the time. I thought they also might be helpful in fertilizing the pond, but I can not get anything to grow. Last night I seen them hunting the FHM I had just stocked. They are voracious predators that never stop eating....... Don't do it......At least until your pond is established and then only put in a few. I had not remembered seeing anything on the duck subject (probably cause I hadn't looked hard enough...Everything else you ever wanted to know can be found on this sight) so I just wanted to share..