If you think setting up your pond is a challenging task wait until you get to the point where you need to maintain your pond. You are required to put in consistent efforts in pond maintenance activities. You cannot take good care of it one month and forget it for a year before you suddenly wakeup to see the weed infestation and other issues such as fish kill and bad odor. If you really want to maintain your pond in good shape, you will need to know what it takes. Someone with limited experience will initially find it challenging.