This is how i have my set up with my pond, bog , negative edge and cistern . I have tried to do this on the computer but the cheap little programs i have are horrible.
a. Is just shy of 3000 gallon cistern Where a very small circulating pump of 300 gph that just keeps the water in the cistern circulating back into the pond. the small pump allows the water to be chilled by the underground area on a hot day, or even warmed in late fall.
b. Is a debris catch made of non woven fabric to catch leaves sediment etc. It is designed to over flow if not cleaned out in time where it then falls into what many would call the pump vault where the water makes its way through 2-4" stone and falls into the cistern .
c. This area the Mrs labeled as Last chance if a fish does happen to go over the negative edge from the pond they fall into a 3 foot deep pond . it's rather small about 4'x4' where there is an aquablox at the bottom of this area that is buried under 2-8" rock this helps to keep large debris like leaves from getting sucked into the pump. and the water is a foot deep giving the fish an area to swim in until he is returned to the pond.
d. Is the main pond 6 feet deep with three circulating jets from the main external pump and the small cistern pump
e. Is the bog where the main pump pushes about 5,000 to 6,000 gph to the bottom of a 6 to 7 foot deep pit where it dumps into a 24" double walled culvert pipe , There it is alowed to settle the water is pumped toward the wall and not across the pipe this way the energy is removed and there is more displacement then there is flow. The water then comes up through cut slots in the culvert and passes through 4-6" river rock about 10" thick where it then enters the second chamber with the aquablocks. same idea no flow but is more displacement from below. where it then passes through 3-4" river rock to a layer of 1-2" river rock and then the final foot plus of 3/8" pea and 3/4" river rock
f. i did not draw that I have two bottom drains that go to the main external pump it would have made for too many lines this way and that. it goes from the pond to the external to the bottom of the bog.
Did I mention I lover over kill in filtration ? But this design was far more then that, this was a design was for where I could travel for weeks or months on end and not have to worry about the pond. pushes the water and the world goes round and round..
he pump