There will be 4 nearly independent filtration systems on the pond. (Had to make a compromise due to space constraints & will point that out in due time.) The two bottom drains are served by the two Nexus units. Each of them will handle about 3,000 gallons per hour. One skimmer feeds the Bakki Shower at approx. 5,000 gallons per hour. The second skimmer will feed a bead filter, also about 5,000 gallons per hour. The bead filter is one I already have (now on the holding tank). It will be in the filter pit with the Nexus units .... really getting cramped.
Fortunately, John is space efficient in the plumbing lay-out.