Understanding the Filtration System

many yards of soil you say well we're taking 51 yards out of the swim pond and 64 yards out of the filtration area yeah so yeah you got multiple four four or five semi- trcks of soil generate you actually invented the filtration method that we're going to be using on this and I'm going to break it down a little bit for these guys if you ever had an aquarium and you ever had an underg grav a filter now think of that but reverse flow it reverse yeah and the reason we did the reverse flow um was because that filter bed is a living breathing colony of microorganisms we want to have high dissolved oxygen going through so the problem with a lot of the down flow is you get a dissolved oxygen drop as it goes deeper and deeper and it becomes a noxic in the bottom and then it gets septic so ours is the exact opposite we have high oxygen on the bottom and then as it gets up closer to the top you're actually closer to the surface where where everything's going to be happening where you have natural ation so we have good oxygen flow going through so the water will actually come underneath the gravel bed and percolate up and through correct and then this