HYDRO ONE POOL CHEMISTRY TOOL

Get the right Hydro One dosage, every time.

These calculators help you measure how much Hydro One Pool Salt, Hydro One Chlorine Tablet – 70%, or Hydro One pH Raiser / Reducer your pool needs — based on your pool size and your latest water test results. Every result is an estimated starting point: always test first, dose in stages, and re-test before adding more. This calculator is only a tool to assist you in maintaining your pool. The actual amount required would also vary on various external factors such as weather, surrounding environment, frequency of using the pool and etc. Hence why Hydro One always recommend to measure the pool chemistry to ensure optimum value can be achieved.

Each calculator is calibrated and tested based on Hydro One product ONLY. Results must not be applied to another brand, formulation, tablet size or concentration.

View the calculators Contact Hydro One Pool Support

Choose a calculator

Test your pool water first with the provided Pool Test Kit, then pick the calculator that matches your system and what you're adjusting.

Hydro One Pool Salt Dosage Calculator

Calculates the recommended quantity of Hydro One Pool Salt for your Hydro One Pool that utilizes Salt Chlorination System. Measures your pool water volume and your current salt reading.

Inputs: pool dimensions, current salt level (%PPM)

Open Calculator

Hydro One Chlorine Dosage Calculator

Calculates the whole number of Hydro One Chlorine Tablet – 70% tablets needed for your Hydro One Pool that utilizes Chlorine System. Measures your pool volume, current chlorine level, and target chlorine.

Inputs: pool dimensions, current & targeted chlorine (ppm)

Open Calculator

Hydro One Pool pH Adjustment Calculator

Calculates an estimated staged dose of Hydro One pH Raiser or Hydro One pH Reducer, based on your pool volume and measured pH.

Inputs: pool dimensions, current & target pH, alkalinity (optional)

Open Calculator

Before you dose

A few habits make every result on this site more accurate and safer to use.

Do

Test the pool water before calculating.
Confirm the pool measurements.
Use only Hydro One product and not generic product.
Follow the instructions displayed by the calculator.
Keep the circulation system operating as instructed unless adviced otherwise.
Add chemicals in controlled stages where instructed.
Re-test after the stated monitoring period of 24hours unless adviced otherwise.
Wear appropriate protective equipment when handling the chemical.
Keep chemicals in their original labelled containers.
Store chemicals securely in a cool, dry, ventilated area away from children, pets, moisture and incompatible substances.
Contact Hydro One Pool Support when uncertain or if you require any assistance.

Do not

Never mix different pool chemicals.
Never substitute another brand or formulation.
Never assume products with similar chemical names share the same concentration.
Never divide Hydro One Chlorine Tablets.
Never handle Hydro One Chlorine Tablets on bare hand.
Never place chlorine tablets whether diluted or not directly onto the pool.
Never add more product merely because the first result appears slow.
Never enter estimated test readings when an actual test can be taken.
Never ignore unusual or extreme test values.
Never use damaged, unlabelled or suspected counterfeit chemicals.
Never empty your Hydro One Pool under any circumstances unless adviced otherwise by our team.

SINCE 2004

Serving Malaysian pool owners since 2004

Hydro One Marketing Sdn Bhd has supplied and install Swimming Pool to Malaysian homes since 2004, with over 3000+ pools installed Nationwide. These calculators are built around the specific Hydro One products that are thoroughly tested and are designed to work with our equipment namely:

🧪Hydro One Pool Salt

🧪Hydro One Chlorine Tablet – 70%

🧪Hydro One pH Raiser

🧪Hydro One pH Reducer

Frequently asked questions

Why must I test the pool first?

Every calculator on this site works from the numbers you enter. A recent, accurate water test — salt level, free chlorine, pH, and alkalinity where relevant — is what makes the estimated dosage useful. Without a real test, the result is only a guess.

Can I use another brand with these calculators?

No. Each calculator is calibrated only for the named Hydro One product — its specific strength, concentration or tablet size. Using the result with a different brand or formulation can lead to under-dosing, over-dosing, or an unsafe combination of chemicals.

Why must chemicals be added separately?

Mixing different pool chemicals together — even two chemicals that are each safe on their own — can cause a dangerous reaction. Always add one product at a time, following that product's own instructions.

Why do I need to re-test?

Chemicals need time to circulate and take effect. Re-testing after the stated monitoring period tells you whether you've reached your target, or whether a further, smaller dose is needed — rather than guessing and risking over-dosing.

What should I do when my reading is unusual?

If a test result looks unusually high, low, or outside the calculator's normal range, don't dose from that reading alone. Re-test to confirm it, and contact Hydro One Pool Support before adding any chemical.

How can I purchase the correct Hydro One chemical?

Contact Hydro One Pool Support by phone or WhatsApp, and the team can confirm the right product and help arrange purchase. This site does not sell chemicals directly.