I am getting the itch to either expand or add something to my pond. It has been quite awhile since I "finished" mine. Around 8 years. Picture014 is how it started. Photo2 was my expansion hole. Pond new is in the current state. The only thing not in the pic is my 45 gallon barrel that is running 2400 gallon per hour through it. Any ideas on what to do next? I will try to get a current photo in a few.