Hi -
Building a new pond. Liner pond, concrete collar, going to be between 6k and 6,500 gallons. Oval shaped, 24' x 13' (why 13' and not 12' ... it had to do with a tree that needed to be removed).
Drains and pickups:
- (2) 4" aerated bottom drains
- (1) Zakki skimmer
- (1) mid-water pickup
Filters in use:
- (1) Zakki Sieve
- (1) ~40" Zakki Shower
- (1) Bead filter (haven't decided which one yet)
- Will add appropriately sized UV
Filtration circuit 1: Bottom drains to Zakki Sieve to Bead Filter to Zakki Shower
Filtration circuit 2: Skimmer to sieve as well, the onto Bead and Shower
Filtration circuit 3: mid-water pickup to fines filtration (probably a second bead) to a water spillway back to pond (I may not activate this circuit right away, but I want it as a safety for filtration expansion because it's easier to do now than later)
The shower is going to feed 2 TPRs, and a GPR. It will be properly valved so I can control the flow between the three, and the remaining water will flow into pond via rock waterfall
When I activate filtration circuit 3, it will go over the falls, or I'll add an additional spillway to keep surface turbulence under control.
The pond is on a relatively steep slope. Low side is ~23" beneath higher side. Going to make up for the difference largely with the concrete collar. I'll then do some stacked stone on the outside of the collar to tie it in. I think it's going to end up being about 30" above ground at the highest point and 2 feet deep from there. I'm anticipating about 60% of pond volume to be underground and about 40% above ground.
Unfortunately the low side is between the house and the pond. So to gravity flow the filtration, it would be super easy if I put the filtration on the low side - but it would aesthetically stink unless I got fancy and built a deck or something over it ...
The other alternative is to move the filtration away from the pond on the high side, which would mean pressurized through the sieve and bead.
I haven't sized the pumps yet ... I will once I make the gravity fed vs. pressurized decision ...
Thoughts?
- Berko