Calcium Builder

[SP232-2.5]    Pack size - 2.5 Kg

£7.99

Calcium Builder
Chemical: Calcium Chloride
Function: Increases the calcium hardness of the water. It is only required in soft water areas where the water supply does not contain sufficient levels of calcium.

Dosing Instructions (Pool)
  • 1kg increases the calcium level of a 10,000 gallon pool by 12 parts per million.
  • Add directly to the pool and brush if necessary to help it dissolve.
  • Leave for 24 hours then re-test to ensure the calcium level is at least 100ppm.
Dosing Instructions (Spa)

In a spa the calcium hardness level will only need increasing when it is below 10 ppm as this is when corrosion can occur. However it is very unlikely that a water supply will have less than 10 ppm in it to begin with.
  • 100 grams (1 scoop) will increase the calcium level by 50 ppm in a 1,000 litre spa.
  • Add directly to the spa and brush if necessary to help it dissolve.
  • Leave for 24 hours then re-test to ensure the calcium level is at least 10ppm.
Click here for a MSDS Sheet for this product.

by Trevor Routley on 17/04/2019
Having recently bought a spa we are finding the management is somewhat different to the pool we previously had. This Calcium builder is needed for the spa as we are in a soft water area but was not needed for the pool. This fitted the bill perfectly.

by Colin Stokoe on 09/08/2017

by robert knight on 07/07/2015

by Deirdre Duncan on 26/03/2013

by Kevin Hughes on 05/09/2012

Service review

by Keith Errington on 29/06/2013

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Delivery Service
Free delivery information
Free Next Working Day Delivery on all orders over £60 placed before 3pm (Zones 1-2 only). All orders under £60 have a delivery charge which depends on the delivery location.
Calcium Builder
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