Borates for Hot Tubs
Borates can improve water feel, help buffer pH drift, and reduce some maintenance friction when used correctly.
Need a dosing estimate? Open the free Spa Chemical Calculator.
Why this chemical is used
Borates are optional. Many owners use them for smoother-feeling water and added pH buffering.
When it is needed
Only add borates after core water balance is correct, and keep products away from children and pets.
How to use it safely
- Test before adding anything.
- Calculate dose based on actual spa volume.
- Add chemicals separately with circulation running.
- Wait, circulate, and retest before adding more.
- Follow the product label and spa manufacturer instructions.
Small spas are easy to overdose. When unsure, add less, circulate, and retest.
Next step: test your water, enter your readings into the calculator, then adjust slowly and retest.
Recommended spa supplies
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Filter cleanerLeisure Time Filter Clean Cartridge Cleaner
Breaks down oils and residue that rinsing alone leaves inside cartridge pleats.
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Replacement filter cartridgeCryspool Spa Filter Cartridge
A fresh cartridge restores flow when cleaning no longer clears residue or debris.
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Spa test stripsAquaChek 7-Way Pool and Spa Test Strips
Quick sanitizer, pH, alkalinity, and hardness checks keep small-volume spa water from drifting.
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