Help & Advice

You can find in this section technical support guides and information to help you get the best out of your pool or spa. Read our Help & Advice here

FAQs

Troubleshooting problems in swimming pools and spas. Read our FAQs here

Fast Delivery

Delivery is FREE for all orders over the value of £75.00 and £7.50 for orders under this value to mainland UK. Read more about our delivery policy here

Pool Size Calculator

Knowing your pool's volume is vital when making adjustments as all calculations and dose rates are based on it.

View Pool Calculator

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Swimming Pool Size Calculator

Calculating Pool Volumes

Knowing your pool's volume is vital when making adjustments as all calculations and dose rates are based on it.

Here is a resource to help you and to convert units into those most useful to you. As mains water is supplied in Britain in cubic metres, start by measuring in metres to obtain an answer in cubic metres. Then use the calculator to convert this figure into litres, imperial gallons or US gallons.

1. Choose Your Pool Shape

 

Rectangle/Square

 

Circular

 

Ellipses

 
 
 

Irregular Shape

2. Enter Pool Dimensions

 
Calculate

3. Your Pool Volume Result

The Volume of Water

Cubic Metres:
Litres:
IMP Gallons:
US Gallons:

Convert into different units

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Dosing Calculators

IMPORTANT: Please note when using any of the dosing calculators that they are only a guide. Online Pool Chemicals accept no responsibility for any damage.

Free Chlorine

To increase Free Chlorine using Stabilised Chlorine Granules (maintain readings between 2 - 4ppm)

Calculate
0 Grams of OPC Stabilised Chlorine Granules are required

Total Bromine

To increase Total Bromine using OPC Brominating Granules (maintain readings between 4-6 ppm)

Calculate
0 Grams of OPC Brominating Granules are required

Chlorine Shock Dose

For a weekly Shock Dose using OPC Chlorine Shock Granules (increase Free Chlorine to between 5 - 8ppm)

Calculate
0 Grams of OPC Chlorine Shock Granules are required

Non Chlorine Shock Dose

For a weekly Shock Dose using OPC Non-Chlorine Shock Granules

Calculate
0 Grams of OPC Non Chlorine Shock Granules are required

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