I have noticed all instructions out there about natural swimming ponds have a down flow filtration through the bog filter. The pump is housed below the bog rocks pulling the water down through the plants and gravel and pumping it back into the open swimming area.
While all the garden pond bogs I have seen have an up flow filtration through the bog. The pump is in the open water area pumping water to perforated PVC under the plants pushing the water to the bog rather than reversed. I would think up flow would provide better filtration.
Curious what your thoughts are?
While all the garden pond bogs I have seen have an up flow filtration through the bog. The pump is in the open water area pumping water to perforated PVC under the plants pushing the water to the bog rather than reversed. I would think up flow would provide better filtration.
Curious what your thoughts are?