Pond planning tool
Pond Pump Flow Calculator
Use this tool to find a practical starting flow rate for your pond. Final pump selection must be confirmed against the pump’s published performance curve at your actual total dynamic head.
Estimate your starting flow
Flexible PVC pipe capacity check
Aquascape CAC specs list lists these approximate maximum flows for flexible PVC. Keep planned flow within the capacity of the smallest pipe in the run, then confirm your system using the pump curve and actual plumbing layout.
| Flexible PVC diameter | Approximate maximum flow |
|---|---|
| 1½ inch | 2,200 GPH |
| 2 inch | 4,800 GPH |
| 3 inch | 11,500 GPH |