If I could talk my better half into giving up her Crepe Myrtles I would have a bog…… but I have 4000 gallon pond with a 6000 gallon pressurized filter, skimmer, and waterfall, all have bio media in each. My skimmer and bottom drain are tied together feeding the suction side of my pump which sends the water thru my pressure filter back to the waterfall. As you can see I also have a overload of plants in the pond itself, so I have no problem with 8 large koi and a 10” goldfish. Someday I am going to wear her down and put a 40 ft long bog down the side of my pool……. LoL