I am currently constructing a 20,000 or so gallon backyard pond, the design is a complete circle in design.
After learning about bog filters, I considered that a place to install is to extend the deep end and bury the outpout pipe from the pond pump underground so it feeds into an underground cavity, created by milk crates, then covered in various layers in rocks. The problem with the design is the top layer of rocks still falls 20" below water level. Because of the symetrical design, I can't change the appearance much by having an area of shallow water.
Can a bog filter still work when fully submerged?
~~~~~~~~~~~~~~~~ <--water level
<--20 inches of water
.................................<--small pebbles
.................................<--larger pebbles
[][][][][][][][][][][][][][]<--milk crates creating a cave, the output of pond pump feeds under there
After learning about bog filters, I considered that a place to install is to extend the deep end and bury the outpout pipe from the pond pump underground so it feeds into an underground cavity, created by milk crates, then covered in various layers in rocks. The problem with the design is the top layer of rocks still falls 20" below water level. Because of the symetrical design, I can't change the appearance much by having an area of shallow water.
Can a bog filter still work when fully submerged?
~~~~~~~~~~~~~~~~ <--water level
<--20 inches of water
.................................<--small pebbles
.................................<--larger pebbles
[][][][][][][][][][][][][][]<--milk crates creating a cave, the output of pond pump feeds under there
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