So I have a failing pond that I've kept on the cheap. Its undersized and I'm not able to accomplish what I want with it. The fail is my pump went out on me last year and I'm ready to step it up. My 300ish gallon pond with its max depth of 10" isn't firing on all cylinders for me. I've drew up a approx 3000 gallon pond that would allow me to have large koi. So I joined on here to see different ideas and other perspectives. Decisions like: - Pressure filter or a 3 chamber bio/mechanical filter - Plants in with the fish or a fish only pond - Rock bottom or keep only the liner - Rock the walls or only liner - I will have media in my skimmer and water fall, how much more is necessary - I'm thinking if I do ALL the work I should be able to accomplish what I want at or about $3500...........am I hallucination?