Hi, I've been lurking here for about a month. This is a great forum with tons of information. I have a small pond now, approximately 7x9x2 and am planning to make it bigger and better within the next month. I have about 10 mature feeder goldfish and 3 Koi, largest is about 13 inches. The new pond will be rectangle, but I haven't decided how large the new pond is going to be yet. I have a Savio Compact Skimmer and plan to install a bottom drain (or drains) a skippy filter and a waterfall. I understand the basics of filtration, etc. But am confusd about how to design the plumbing, i.e. where to put the pump(s), where do the pvc pipes for skimmer and bottoms drains go. I was hoping that some kind soul would be willing to show me a very basic diagram that shows the plumbing. My husband is a general contractor with a back hoe and plumbing skills, he will be doing most of the work, I just want to be able to show him how it should be built. Sorry this is so long!! Thanks.