Pool, Spa & Water Treatment Chemistry worked example

Flocculant Dose with water volume to treat of 5 10k gal: a worked example

What does the result look like when water volume to treat reaches 5 10k gal? The full calculation is worked below with real intermediate numbers. Use it for severe cloudy-water cleanup when vacuum-to-waste and filtration plans are ready.

The inputs for this scenario

  • Water volume to treat (gallons / 10,000): 5 10k gal (raised for this scenario; the documented default is 2)
  • Label dose rate for flocculant: 8 fl oz / 10k gal (unchanged)
  • Cloudiness severity factor: 1 x (unchanged)
  • Label-permitted dose adjustment: 1 x (unchanged)

Working through the calculation

  • Applying the documented formula (Flocculant dose = volume basis x label dose rate x severity factor x adjustment) to the inputs above produces each figure below.
  • At this operating point the engine returns 40 fl oz for flocculant dose, the number this scenario is built around.
  • At this operating point the engine returns 40 value for base product.
  • At this operating point the engine returns 1 x for multiplier.
  • At this operating point the engine returns 40 value for factor a x b.

How this compares with the baseline

  • Against the tool's baseline example, where water volume to treat sits at 2 10k gal and the headline result is 16 fl oz, this scenario comes in 150% above the baseline at 40 fl oz.
  • A figure at this level is achievable when water volume to treat is genuinely sustained, not just peaked for a shift. Floc requires the filter valve set to 'waste' (or the pump off overnight then vacuum to waste) — this calculator sizes the dose but assumes you follow the label's circulation and settling procedure, which varies by product.

Results at a glance

  • Flocculant dose: 40 fl oz (headline result)
  • Base product: 40 value
  • Multiplier: 1 x
  • Factor A x B: 40 value

Run it with your numbers

  • Every input above is editable in the live Flocculant Dose calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.