Pool, Spa & Water Treatment Chemistry worked example

Flocculant Dose with water volume to treat of 1 10k gal: a worked example

This worked example runs the flocculant dose numbers for a tougher week than the baseline: water volume to treat of 1 10k gal instead of the typical 2 10k gal. Estimate flocculant dose from water volume, product rate, and treatment severity.

The inputs for this scenario

  • Water volume to treat (gallons / 10,000): 1 10k gal (the input this scenario stresses; the baseline uses 2)
  • Label dose rate for flocculant: 8 fl oz / 10k gal (held at the documented default)
  • Cloudiness severity factor: 1 x (held at the documented default)
  • Label-permitted dose adjustment: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Flocculant dose = volume basis x label dose rate x severity factor x adjustment.
  • Flocculant dose works out to 8 fl oz at these inputs, and this is the headline figure for the scenario.
  • Base product works out to 8 value at these inputs.
  • Multiplier works out to 1 x at these inputs.
  • Factor A x B works out to 8 value at these inputs.

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 50% below the baseline at 8 fl oz.
  • Use it before a floc-and-vac treatment on cloudy, dead-algae, or post-shock water where the filter alone will not clear the haze. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Flocculant dose: 8 fl oz (headline result)
  • Base product: 8 value
  • Multiplier: 1 x
  • Factor A x B: 8 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Flocculant Dose calculator, set water volume to treat to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.