Hello all I'm a new member here with a new pond (my first one in years) I have taken over a year to build this and I love it. I am about ready for the water and filtration. Alittle background on myself I own a water filtration company specializing high end equipment for restaurants so I have lots of used and new equipment tanks, carbon, different medias, filters. This was my thought for the filtration I have a small carbon tank on the inlet of the system ( the float) 9"x 44" tank with 1 cubic ft coconut carbon down flow 9"x 44" tank with 1 cubic ft sand down flow 9"x44" tank with bio balls up flow not sure how many to put in or if that tank size will work Uv light. Also not sure of what order the filtration sould be in Do I need anyother filtration or does something seem wrong with what im thinking. Im not sure yet on what the actual gallon size of the pond is I will have a meter on when I fill it.