Pool, Spa & Water Treatment Chemistry worked example

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

This scenario runs the metal sequestrant dose calculation on the strong side: water volume to treat of 5 10k gal, with every other input held at its documented default. Use it for startup, refill, stain prevention, or high iron/copper source water planning.

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 sequestrant dose rate: 16 fl oz / 10k gal (unchanged)
  • Metal load risk factor: 1 x (unchanged)
  • Label-directed treatment adjustment: 1 x (unchanged)

Working through the calculation

  • Applying the documented formula (Sequestrant dose = volume basis x label dose rate x metal risk factor x treatment adjustment) to the inputs above produces each figure below.
  • At this operating point the engine returns 80 fl oz for metal sequestrant dose, the number this scenario is built around.
  • At this operating point the engine returns 80 value for base product.
  • At this operating point the engine returns 1 x for multiplier.
  • At this operating point the engine returns 80 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 32 fl oz, this scenario comes in 150% above the baseline at 80 fl oz.
  • Use it at startup, after adding well or high-metal fill water, following a copper algaecide dose, or as a scheduled maintenance top-up before shocking. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Metal sequestrant dose: 80 fl oz (headline result)
  • Base product: 80 value
  • Multiplier: 1 x
  • Factor A x B: 80 value

Run it with your numbers

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

Last reviewed 2026-05-12.