Just bought a house with a pond and know nothing about them. It's about 20 years old and at one time must have been top of the line, was featured in local home show, built by a top designer. It's evident from all the different pipes that are disconnected and excess equipment lying around that there have been some changes. There is a NurseryPro IPX6 filter system that no longer works, and a black power cord running into the top of a PVC pipe. The plants have grown out of the pots and have punctured the liner in multiple areas. I'm posting pics, if anyone can identify what this is and give me ideas on what I need to do it would be appreciated.