These chlorine granules are one of the most popular products for ensuring pool and spa water is safe and bacteria free.
Apply regularly to achieve the recommended free chlorine level of 3-5 mg/l (ppm) for hot tubs or 1-3 mg/l (ppm) for swimming pools. These granules are rapid dissolving, long lasting and have little effect on the pH of the water.? They are suitable for shock dosing small above ground pools.? You can find dosing amounts below.
Key Features
Granular chlorine has little effect on the pH level of the water. These stabilised chlorine granules are ideal for regular dosing of your swimming pool or spa, to produce free active chlorine which kills bacteria and other potentially harmful organisms.
Application Instructions
1. Maintain pH level within the ideal range of 7.2 ? 7.6. If outside this range please use our PH plus or PH minus products to adjust for the best results.
2. Maintain free chlorine residuals for spas within the range 3 ? 5mg/l (ppm).? For swimming pools it should be 1 – 3mg/l (ppm). Freshly filled spas require an initial shock or start up dose of chlorine: 50mg/l (ppm) for 1 hour or 20mg/l (ppm) for 2 hours.
3. This product may be applied directly to pools or spas where temperatures exceed 20? degrees C. If below this temperature or in doubt it is recommended to pre-dissolve in a clean plastic container at a maximum rate of 10g of product per 0.2 gallons (1ltr) in water. Stir well to ensure product is fully dissolved. Add the resulting solution to the spa or pool whilst the pumps are turned ?on?.
4. Repeat dose application if necessary to achieve the required levels.
5. It is recommended that you periodically (e.g. weekly or after heavy spa use) shock dose your spa to eliminate any excess contamination.
Dose Rates
Medium hot tub 1,000 litre (220 Gallons) of water requires 2g to increase the chlorine level by 1mg/l (ppm) or 6g to increase chlorine level by 3mg/l(ppm)
Large hot tub 1,500 litre (330 Gallons) of water requires 3g to increase the chlorine level by 1mg/l (ppm) or 9g to increase chlorine level by 3mg/l(ppm)
Small pool 40,000 litres of water requires 80g to increase the chlorine level by 1mg/l (ppm) or 240g to increase chlorine level by 3mg/l(ppm)
Medium pool 60,000 litres of water requires 120g to increase the chlorine level by 1mg/l (ppm) or 360g to increase chlorine level by 3mg/l(ppm)
Large pool 80,000 litres of water requires 160g to increase the chlorine level by 1mg/l (ppm) or 480g to increase chlorine level by 3mg/l(ppm)
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AquaSPArkle - Multifunctional 20g Chlorine Tablets 1 X 1kg Clarifier clear slow release
1 ×
200g STABILISED Chlorine Tablets 10kg SLOW RELEASE Quality product 
AquaSPArkle - Multifunctional 20g Chlorine Tablets 1 X 1kg Clarifier clear slow release 
Robert S (verified owner) –
Keeps pool clean and clear
Mr James W Brown –
Price very good ,granules seem to clear existng hot tub water very quickly, will purchase again when required.J Clark
Savanna Daykin –
Ive given 4 as I know the product is great however I pay the premium for here PRIME MEMBERSHIP amp product did not arrive the next day as promised
Gromatron –
This is ok, but you need substantial amounts of teaspoons to equate to the tablet, which have the slow release. This is awkward to use, I wish I had just stuck with the tablets instead.
Christine Anne Robinson –
10 out 10
Mrs. Diane Flynn –
Great company as helped sort out a delivery issue promptly. Product as expected
R. Murphy –
Does what it says on the tin
Cheryl Richards –
Good value does what it says on the container which is awkward to open.
Norman Bemand –
Use this to keep our Jacuzzi hot tub healthy. Works as described. I test with dip testers and treat the hot tub with these granules daily. Necessary during lockdown when it is used every day.
K. Turner (verified owner) –
Does what meant too