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)
Garry –
If you have animals and cant get rid of tge urine smells they create, simply add a small amount 2 tea spoon to a hot bucket of water and let it dissolve tye swill the area. It will remove 100 of the smell. Also add a little to mop bucket when mopping the floor incase the dogs have walked any in.
miss caroline hart –
Always use
High hopes and great expectations. (verified owner) –
I dose my hot tub with these an a regular basis and found the concentration level easy to control. After a bit of dosing and testing found that a minimal amount was needed on a regular basis approx 5 grams. Dosing from empty 50g,
Agnieszka Koundourakis (verified owner) –
Good product works as it should
Peter Cole (verified owner) –
So far so good. Been using this for a few weeks now and my 8 foot kids pool water is still crystal clear. Am using alongside an algaeside however so not sure which is doing what.
jak (verified owner) –
There was no physical measure included in the product to help get the right amount into the pool.
David W. Noon –
Great value for money, just what we needed
Domenico Matteo GUERRA (verified owner) –
Five Stars
ShannonZ –
It does what it says on the bottle, the hot tub loves it, what more else is there to say about it lol
Morena Frassani (verified owner) –
Excellent product at a great price.