POOL EQUIPMENT TOOLSBilanda knowledge centre
Pool sizing answers that lead to practical equipment choices.
Use these short references to understand the numbers behind pool circulation and filtration, then continue to the free calculator or Bilanda sand-filter selector.
How to calculate swimming pool volume
Formulas for rectangular, circular, oval and irregular pools, including sloped bottoms and mixed-depth zones.
Read the guide →02 · FILTER QUANTITYHow many sand filters does a pool need?
Convert required circulation flow into conservative operating capacity and sensible parallel-filter options.
Read the guide →03 · DESIGN INPUTSPool turnover and filtration rate guide
See how turnover time affects flow and how filtration rate affects the required filter area.
Read the guide →From the Bilanda official website
Continue from sizing to operation and pool-side equipment.
These practical Bilanda articles add product-use detail to the calculation guides above.
6-Way Multiport Valve Operation Guide for Sand Filters
Learn when to use Filter, Backwash, Rinse, Waste, Recirculate and Closed—and why the pump must be stopped before changing valve position.
Read on the Bilanda website ↗POOL-SIDE EQUIPMENTHow to Choose Pool Grating: Materials, Uses & Installation
Compare PP plastic, stainless-steel and aluminium grating for overflow channels, deck drainage and different traffic conditions.
Read on the Bilanda website ↗