Some other off-site pool chemical guides:

QualAqua not only provide a fantastic range of pool and spa chemicals and water testing equipment! They also provide fantastic support and some of the best guides on the internet!

SWIMMING POOL & SPA WATERCARE GUIDES 

WATERCARE TROUBLESHOOTING GUIDES

Here are a list of swimming pool and spa common problem symptoms.   If you are suffering from any of the following problems, please click the link to visit the guide.
	Cloudy water
	Unpleasant water
	Eye irritation
	Sore eyes / throat
	Chlorine levels diffficult to maintain
	No chlorine reading despite adding chlorine
	pH too low
	pH too high
	pH levels erratic
	pH locked
	Low alkalinity
	Slimy pool walls
	Dirt on pool wall at water line
	Rough scale formed on pool surfaces
	Sharp edges around tiles
	Innefective filtration

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Why do I need pool chemicals?

Explanation of our full range of pool and spa chemicals.

All chlorine treated pools should have a pH between 7.2 and 7.6. A low pH (acidic) is corrosive and will damage pool parts and sting your eyes. A high pH (alkaline) inhibits the chlorine from doing it’s job and also can cause scale formation, due to higher calcium content.

This has a long shelf life but as some of the calcium does not fully dissolve it can cause some cloudiness. Best  mixed with water and added through the skimmer.

No need to wait with this powerful chlorine-free shock, you can swim straight after the dosing. Great at killing organic pollutants, bacteria, and algae. It also boosts the chlorine’s killing power. Regular use also clarifies and restores sparkle to pool water. This quick dissolving formula requires no pre-mixing and will not bleach your vinyl liner. It is also compatible with bromine. Use 0.5kg per 10,000 gallons

Long lasting and has a long shelf life. This should be added regularly to maintain a concentration of 1-2 ppm. More will be needed during hot weather when your water is warmer or when the pool is uncovered for longer periods. Always pre-disolve to avoid granules bleaching your liner.

Long lasting with a long shelf life. These must be used either in the skimmer or preferably with a dispensor so they slowly dissolve. Never mix pool chemicals together in their undissolved or concentrated form. Stabilised and unstabilised chlorine, for example, form an explosive mixture.

ADJUSTING  pH (Pool water must have a pH between 7.2 and 7.6)
To lower pH - ProSwim Dry Acid (Sodium Bisulpate) Add 10grm per 2000 gals to reduce pH by approximately 0.2. 

To raise pH – ProSwim Alkali (Sodium Carbonate) Add 10grm per 2000 gals to raise pH by approximately 0.2.

OTHER CHEMICALS USED AS POOL SANITISERS

Bromine Tablets
Spa Bromine tablets provide a residue free source of active Bromine for disinfection of spas. It must be used in a dispenser and adjusted to achieve a bromine residual of 2.0-4.0 ppm. More expensive than chlorine and attacked by light so is not often used in outdoor pools unless bathers are particularly allergic to chlorine.  The pH must be kept between 7.2 and 7.6

Algicide ProSwim All Seasons Concentated Long Life Algicide
A copper based algicide for summer or winter. Inhibits the growth of algae if the chlorine level accidently falls.

1lt will treat 10,000 gals in summer and 7,500 gals in winter. 
Summer - Add the required dose and retreat 10-12 weeks later to cover the complete season.

Winter – Add the required dose and allow to circulate prior to shutting down the system.
ProSwim Spa Defender (Scale and stain inhibitor)
Prevents and removes scale formation. 60mls for spas up to 800 gals. 120mls spas over 800 gals.

Add dose directly to spa.  Run pump for 1 hour on a normal filter cycle.
Do not use on the same day as ‘Spa Bright & Clear’.
ProSwim Spa ‘Bright & Clear’ (Liquid Clarifier)

Polymer based liquids that cause fine particles to stick together so that they can removed by the filter.

Use 30mls per 450 gals. Dilute recommended dose in a plastic bucket then add to the spa.

ProSwim Spa Foam Down (Suppresses & removes foam)
Add sparingly directly to the foaming area. Repeat as required.

Ozone purification explained
Ozone is generated when a molecule of oxygen is illuminated by UV light. It destroys algae bacteria and viruses on contact, breaks down harmful chemicals and acts as a flocculent. It also oxidizes combined chlorine and bromine freeing them to be re-used. As micro-organisms are killed only as they pass through the unit a residual of chlorine or bromine must be kept in the pool.

To calculate your pool capacity
To calculate your pool capacity
Measure in feet. L x W x Average Depth x 6.25 = Gallons  - Round pools = L x W x Average Depth x 4.9 = Gallons.