- Cal-Hypo is also known as bleaching powder and, confusingly, as Hypo-Cal
- Cal-hypo is a stable substance and can be stored for long periods of time without significant loss in available chlorine level
- When dissolved in water it forms Hypochlorous Acid very quickly
- Supplied in granular form or as tablets, it can be used for regular chlorination as well as for Superchlorination
- It should be pre-dissolved in water and then added as a liquid to the pool when needed, via the skimmer
- Cal-hypo is classified as an ‘extreme oxidizer’ which is why it bleaches so well
- All the other types of Chlorine are classified as ‘oxidizers’, with the exception of Chlorine Gas, which is also an extreme oxidizer
- Do not mix Cal-hypo with anything but water; mixing with organic substances may cause a fire
- Exercise extreme caution when sweeping-up in chemical-storage areas
- Mixing the dust and spillage of various products together may cause a fire to start; so clean up product spills separately
- Cal-hypo, either in granule or powder form, will turn the water slightly cloudy initially because the Calcium takes time to dissolve
- Cal-hypo granules can bleach and weaken vinyl liners or PVC pool surfaces. Therefore, use a feeder or pre-dissolve it in water before adding it
- Use of Cal-hypo will increase the Calcium Hardness level by an average of 3 to 10 ppm per month, making it advisable to test the hardness level in the pool more frequently
- 50kg of Cal-hypo will provide the same amount of Chlorine as 250 litres of liquid Chlorine or 30kg of Chlorine Gas
- If Cal-hypo is the principal sanitizer Cyanuric Acid should be added separately to prevent the Chlorine in the pool from degradation by sunlight
We supply all plant and equipment featured on this website. All our work is Guaranteed; Parts and Labour
For free and unbiased advice, a site visit or no-obligation Quotation*, please make initial enquiries by email. Tell us a little about your pool problem and include a daytime phone number. Thanks, we look forward to meeting you soon
Note: - Please contact our recommended pool professionals for supply and installation of all pool-related services: -
Andalusia and the Costa del Sol - Pool Safety Spain
Nerja area - This email address is being protected from spambots. You need JavaScript enabled to view it.
*We only offer Quotations: - a fixed, agreed price that cannot, and will not, be increased. We do not give 'estimates', as an estimate offers the client no guarantee of final price
Share this website with other Pool Owners and Users, encourage them to read about Pool Safety, learn CPR and help them to save lives, time and money. Please help us to make every pool a safer place - by sharing this information we can cut the number of pool accidents and deaths. Please also see our Facebook page
Ken Walker - MyPoolGuru©