Borates Dose Calculator

How the Borates Dose Calculator Works

This calculator estimates how much boric acid is needed to raise the borate level from the current reading to a selected target. Enter the pool volume, current borates, target borates, and preferred output unit.

The result is based on a field estimate for pure boric acid. Product purity and formulation can vary, so always compare the answer with the product label before adding anything.

Why Pool Owners Use Borates

Borates can help slow upward pH drift, which may be useful in saltwater pools, spas, and pools with strong aeration. Some owners also report improved water feel and appearance.

Borates are optional. They do not replace chlorine, proper CYA, filtration, circulation, or routine water testing.

Before Adding Boric Acid

• Balance pH and total alkalinity first.
• Confirm the current borate level with a suitable test.
• Check the product purity and label directions.
• Consider ingestion risk for children and pets.
• Plan to add the dose in stages and circulate thoroughly.

Common Borate-Dosing Mistakes

• Assuming the current level is zero without testing.
• Using a dose intended for a different product.
• Adding the full amount without staged dosing.
• Ignoring pH and alkalinity before treatment.
• Forgetting that lowering borates usually requires water replacement.

Frequently Asked Questions

What borate level is commonly used?

Many borate-managed pools operate around 30–50 ppm. Follow your product label and local guidance.

Do borates evaporate?

No. They leave mainly through splash-out, backwashing, leaks, draining, and water replacement.

Will borates stop pH rise completely?

No. They can slow the rise, but aeration, salt-cell operation, and total alkalinity still influence pH.

Can I add boric acid all at once?

Large doses are better added in stages with circulation and retesting, following the product instructions.