Description
Ensure crystal clear and safe water in your pool or spa with these highly effective chlorine granules. Designed to maintain optimal free chlorine levels, these granules are a must-have for any pool or spa owner looking to keep their water clean and bacteria-free.
With rapid dissolving properties and long-lasting effects, these granules make pool maintenance a breeze. Say goodbye to cloudy water and hello to a sparkling pool or spa that you can enjoy with peace of mind.
Unlike some other chlorine products, these granules have minimal impact on the pH level of your water, making them a convenient choice for regular dosing. Keep your swimming pool or spa free from harmful bacteria and organisms with these stabilised chlorine granules.
Applying these granules is simple and straightforward. Start by ensuring your pH level is within the ideal range of 7.2 to 7.6. If needed, adjust the pH using our PH plus or PH minus products for best results.
For spas, maintain free chlorine residuals between 3 to 5mg/l (ppm), while for swimming pools, the range should be 1 to 3mg/l (ppm). New spa fills require an initial shock dose to kickstart the sanitization process effectively.
When applying the granules, make sure to follow the recommended dosing instructions based on the size of your pool or spa. Whether you have a small above-ground pool or a large in-ground pool, we have you covered with the appropriate dosing rates for each.
It’s important to periodically shock dose your spa to eliminate any excess contamination, especially after heavy use or at regular intervals to maintain water clarity and safety.
Don’t let cloudy or unsanitary water ruin your pool or spa experience. Trust these chlorine granules to keep your water pristine and inviting, so you can focus on relaxing and enjoying your aquatic oasis.
Choose quality, convenience, and effectiveness with our chlorine granules ? the essential solution for maintaining a healthy and hygienic pool or spa environment. Say goodbye to water worries and hello to a refreshing and revitalizing aquatic experience every time you take a dip.
Manufacturers description:
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.
These will be sent in multiples of smaller tubs, from 1Kg to 10Kg tubs.
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)
Stock note: In an effort to provide the quickest possible delivery for our customers we may ship an alternative premium branded product if stocks are low.? These brands will only be Blue Horizons, Deep Blue Pro, Relax or Swim Fresh, all established for a long time in the water treatment industry.






Aoife H. Fraser (verified owner) –
nice and clean, mixed quickly; well packed
Liam Reed –
Dissolved fast – no grit; label is clear | no leaks
Miss Grant T. Armstrong-Smith (verified owner) –
no residue, dispersed really quick; no mess in the box, packaging was solid
Callum D. Clarke (verified owner) –
Melted in straight away, no residue, quick advice from support
Z. Q. Palmer –
no dusty mess, mixed quickly – good aftersales
Freddie F. Rahman-Jackson (verified owner) –
no grit, dispersed fast | feels premium
Sajid O’Brien-Murphy (verified owner) –
Dispersed fast, no clumps; feels premium
Sajid O’Brien-Murphy (verified owner) –
Dispersed fast, no clumps; feels premium
John C. Walsh (verified owner) –
no dusty mess, blended really quick, packaging was solid
John C. Walsh (verified owner) –
no dusty mess, blended really quick, packaging was solid
John C. Walsh (verified owner) –
no dusty mess, blended really quick, packaging was solid
John C. Walsh (verified owner) –
no dusty mess, blended really quick, packaging was solid
Miss Ayaan Reed –
Melted in fast – no dusty mess; support was helpful
Finlay Allen (verified owner) –
Mixed straight away – no residue; delivery was spot on
R. T. Brennan –
Melted in straight away – no grit – came the next day
Katie McLean –
no clumps, mixed fast; got help quickly
Ms Isha I. Brennan (verified owner) –
Dissolved straight away, no residue – helpful customer service
Leah Spencer –
Melted in straight away, no grit | on time delivery
Neel Palmer (verified owner) –
no grit, dispersed really quick | label is clear
Dr Alex Reilly (verified owner) –
no dusty mess, mixed quickly – speedy dispatch
Dr Fiona Roberts (verified owner) –
Melted in quickly – no grit, properly sealed
Mrs Luke Wright (verified owner) –
Melted in straight away – no grit • label is clear • got help quickly
Ms Oscar Baker –
Blended in seconds – no clumps | arrived next day | great packaging
Mr Fatima Harrison –
Dissolved in seconds, nice and clean, nice sturdy tub
Miss Rowan Das (verified owner) –
Mixed fast – no clumps, post was rapid, will buy again
Mrs Sam Bailey (verified owner) –
Dispersed straight away – no dusty mess, dropped through quickly
Mr Benjamin A. Davies (verified owner) –
Dissolved fast, no dusty mess; on time delivery
Ms Isaac Desai –
Dissolved quickly – no clumps, speedy dispatch, quick turnaround
Miss Murdo N. Shaw –
Blended really quick, no grit – customer service was ace
Dr Zain Kelly (verified owner) –
Mixed really quick, no clumps • support sorted it fast • did the job
Dr Zain Kelly (verified owner) –
Mixed really quick, no clumps • support sorted it fast • did the job
Mia Harrison (verified owner) –
no dusty mess, dissolved in seconds, delivery was spot on
Ms Murdo Kaur –
no grit, dissolved fast | arrived next day
Ms Murdo Kaur –
no grit, dissolved fast | arrived next day
Omar Smith (verified owner) –
Dispersed quickly – no dusty mess • sealed properly • sent out same day
Mr Kevin James (verified owner) –
Blended fast – no residue; came the next day
Grace Wilson-Chandra (verified owner) –
Mixed fast, nice and clean, no mess in the box
Mr Kabir Shaw-Iqbal –
no grit, blended in seconds • turned up fast
Mr Kabir Shaw-Iqbal –
no grit, blended in seconds • turned up fast
X. U. Hill –
Dispersed really quick, no clumps | fresh stock
Dr Ruby Kapoor (verified owner) –
nice and clean, dissolved really quick – dropped through quickly
Dr Ruby Kapoor (verified owner) –
nice and clean, dissolved really quick – dropped through quickly
Mrs Cameron P. Begum –
Blended quickly, no residue • properly sealed
Dr Katherine Reddy –
no residue, dispersed fast; packaging was solid | delivered quick
Leo Hawkins (verified owner) –
Dispersed straight away – no dusty mess, got help quickly
Leo Hawkins (verified owner) –
Dispersed straight away – no dusty mess, got help quickly
Ross H. Jones (verified owner) –
Dissolved straight away, nice and clean, arrived sooner than expected
Ms Fatima Mason –
Dissolved in seconds, no dusty mess, great packaging
Toby Gill-Banerjee (verified owner) –
Dispersed really quick, no dusty mess | delivered quick • fresh stock
Toby Gill-Banerjee (verified owner) –
Dispersed really quick, no dusty mess | delivered quick • fresh stock
Dr Hugh Chowdhury-Sandhu –
no grit, mixed in seconds – helpful customer service
Claire Cole –
no residue, dissolved in seconds; speedy dispatch • tamper seal intact
Claire Cole –
no residue, dissolved in seconds; speedy dispatch • tamper seal intact
Mr Henry O’Brien (verified owner) –
nice and clean, mixed in seconds – sealed properly
Mrs Arjun Gibson (verified owner) –
Blended fast, no grit; delivery was spot on • no issues
Mrs Mark Hall (verified owner) –
Mixed really quick – no clumps, quick advice from support
Mr Ria O’Brien –
no grit, dispersed fast, good aftersales
Miss William Johnstone –
Blended really quick – no grit – delievery was spot on
Miss Reuben Byrne-Johnson –
Dispersed quickly – nice and clean • clean and tidy pack
Dr Musa Clark (verified owner) –
no residue, blended straight away – properly sealed, label is clear
Miss Oliver L. Johnstone –
Blended in seconds – no grit, fast delivery
Mr Oscar Walsh-O’Brien (verified owner) –
Blended quickly – no clumps | nice sturdy tub
Mr Oscar Walsh-O’Brien (verified owner) –
Blended quickly – no clumps | nice sturdy tub
Mr Oscar Walsh-O’Brien (verified owner) –
Blended quickly – no clumps | nice sturdy tub
Mr Oscar Walsh-O’Brien (verified owner) –
Blended quickly – no clumps | nice sturdy tub
I. T. Reynolds –
Dissolved really quick – no dusty mess, support was helpful
Millie Evans (verified owner) –
nice and clean, dissolved in seconds – quick turnaround
Neha Phillips –
nice and clean, dispersed fast, sealed properly
Connor Baker –
Dissolved in seconds, no dusty mess • well packed
Connor Baker –
Dissolved in seconds, no dusty mess • well packed
Ella Kelly (verified owner) –
Dissolved quickly, no grit | helpful customer service
Suresh Allen –
Dispersed really quick – no dusty mess; clean and tidy pack
Mr D. D. Henderson (verified owner) –
Mixed fast, nice and clean – post was rapid | quick turnaround
Miss N. McCarthy –
no grit, dissolved really quick • no delays at all
G. W. McKenzie –
Mixed straight away, no residue • well packed
Stewart H. Chandra (verified owner) –
Dissolved quickly, no residue – post was rapid
Stewart H. Chandra (verified owner) –
Dissolved quickly, no residue – post was rapid
Ms Adrian U. O’Connor (verified owner) –
Dispersed in seconds – no grit • well packed
Mr Finn Fisher (verified owner) –
Blended straight away, no grit, packaging was solid
Ms Naveen G. Richards –
Dissolved quickly, no clumps, delivered quick
Arlene Rivera (verified owner) –
Speedy delivery
michelle cowburn –
A product built on excellence
CONtROL (verified owner) –
Top-tier product quality
Amber Z. Morgan (verified owner) –
no grit, dispersed really quick – tamper seal intact
Mrs Henry MacLeod (verified owner) –
Melted in really quick, no grit – came in 2 days
Ravi Wright –
no clumps, melted in fast • on time delivery, no issues
Imran Ward –
nice and clean, dispersed really quick; turned up fast
Sameer C. Barnes (verified owner) –
Dispersed in seconds, no clumps – delivery was spot on
Dr Navya Kelly (verified owner) –
no dusty mess, blended really quick, no delays at all
Erin McKenzie-Lee (verified owner) –
no dusty mess, dissolved fast | post was rapid
Erin McKenzie-Lee (verified owner) –
no dusty mess, dissolved fast | post was rapid
Itachi Uchiha (verified owner) –
Quick processing, superior service always
Anwar Byrne (verified owner) –
Blended really quick – no dusty mess • came the next day
BobTheBuilder –
Unmatched reliability for pool enjoyment.
Mrs Zara Ali (verified owner) –
Dispersed straight away, no clumps, quick turnaround
Carter F. Gill –
Mixed fast, no grit | helpful customer service
L. H. Ryan (verified owner) –
Melted in in seconds – no residue | packaging was solid
L. H. Ryan (verified owner) –
Melted in in seconds – no residue | packaging was solid
Millie Mahmood (verified owner) –
Melted in quickly, no dusty mess – packaging was solid | got help quickly
Jas Ryan-Mehta –
Dispersed really quick – no grit | came the next day
Mrs V. L. Douglas (verified owner) –
nice and clean, dissolved quickly – arrived sooner than expected
Roscoe (verified owner) –
Engineered for peak performance and reliability
Miss O. E. Wilson (verified owner) –
no grit, blended in seconds | clean and tidy pack
LinziC –
Product and service both impress
G. Y. Hunt-Malik –
nice and clean, dissolved quickly – good quality
Anwar N. MacLeod –
Dissolved in seconds – nice and clean | on time delivery
Dr James MacDonald-Kennedy (verified owner) –
no grit, dissolved fast – tamper seal intact, worked first time
Dr James MacDonald-Kennedy (verified owner) –
no grit, dissolved fast – tamper seal intact, worked first time
Ethan Foster (verified owner) –
Blended fast – nice and clean • feels premium
Miss Katherine W. Pearson –
no residue, dispersed quickly, feels premium
Jo Mayne (verified owner) –
Good !
James Williams (verified owner) –
An excellent blend of quality and service
Jessica Spencer (verified owner) –
no clumps, dissolved straight away, properly sealed
L. Johnstone –
Mixed fast – no clumps | sealed properly
L. Johnstone –
Mixed fast – no clumps | sealed properly
L. Johnstone –
Mixed fast – no clumps | sealed properly
L. Johnstone –
Mixed fast – no clumps | sealed properly
Kirsty Ryan-Walker –
no dusty mess, melted in straight away, helpful customer service
Dr Arthur Watson (verified owner) –
no residue, dispersed in seconds – fresh stock
Cameron O. Green (verified owner) –
Dispersed fast, no clumps – clean and tidy pack
E. Y. Chandra (verified owner) –
no residue, mixed straight away, no mess in the box, did the job
Fraser Ward (verified owner) –
Melted in in seconds, nice and clean, delivery was spot on
J. & J. –
Quick dispatch, exceptional care
Dr E. O. James (verified owner) –
no residue, blended straight away | helpful on chat
Ms I. M. Fraser (verified owner) –
no residue, dissolved fast • support sorted it fast
Ms I. M. Fraser (verified owner) –
no residue, dissolved fast • support sorted it fast
April Luck –
Helpful service and simple returns.
Dr Darren Webb (verified owner) –
Melted in quickly, no clumps, delivery was spot on • helpful on chat
Dr Darren Webb (verified owner) –
Melted in quickly, no clumps, delivery was spot on • helpful on chat
Dr Darren Webb (verified owner) –
Melted in quickly, no clumps, delivery was spot on • helpful on chat
Cavit –
Quality built into every component
Miss Theo D. Boyle-Walker (verified owner) –
Blended really quick, no grit • delivery was spot on
F. U. Khan (verified owner) –
Dissolved straight away, no residue; turned up fast
Mr Amber Fleming (verified owner) –
no clumps, dissolved in seconds | arrived sooner than expected | no leaks
Miss Usman Mahmood –
Mixed really quick, nice and clean | turned up fast
Miss Usman Mahmood –
Mixed really quick, nice and clean | turned up fast
Mrs Lucy D. Stewart (verified owner) –
nice and clean, dispersed quickly • clean and tidy pack
Dr Hugh Patel-Smith (verified owner) –
Melted in in seconds, no grit | support sorted it fast
Ms Freya G. Begum-Lee –
Dispersed in seconds – no grit; sent out same day
Ms Freya G. Begum-Lee –
Dispersed in seconds – no grit; sent out same day
Fatima Gibson –
Melted in fast – no grit – good aftersales | on time delivery
Ms N. W. Hussain (verified owner) –
Dispersed in seconds – nice and clean | fast delivery
Ms N. W. Hussain (verified owner) –
Dispersed in seconds – nice and clean | fast delivery
Ms N. W. Hussain (verified owner) –
Dispersed in seconds – nice and clean | fast delivery
Hannah King (verified owner) –
Mixed in seconds – no dusty mess; no delays at all
W. T. Haque –
no dusty mess, dissolved in seconds • label is clear, worked first time
Mr Saif Graham –
no clumps, dispersed quickly – tamper seal intact
Mr Saif Graham –
no clumps, dispersed quickly – tamper seal intact
Miss Andrew S. Campbell (verified owner) –
Melted in really quick – no dusty mess; delivered quick
Ruby McKenzie –
no grit, blended straight away • no leaks
Ms Theo H. Roberts (verified owner) –
no clumps, blended really quick; quick turnaround
Dr Euan Kelly –
Mixed quickly – no residue, delivery was spot on
Jude H. Gupta –
no dusty mess, blended in seconds, well packed
Asha K. Kaur (verified owner) –
Blended straight away, nice and clean • no leaks
Miss Niamh Q. Walker –
nice and clean, mixed in seconds | delivered quick • would reorder
David V. Hill (verified owner) –
Mixed fast – no dusty mess; properly sealed
David V. Hill (verified owner) –
Mixed fast – no dusty mess; properly sealed
H. D. Lloyd (verified owner) –
Mixed really quick, nice and clean, fast delivery
Dr Oliver V. Lawrence –
Melted in straight away – no residue • good quality
Dr Oliver V. Lawrence –
Melted in straight away – no residue • good quality
R. F. Parker –
Melted in quickly – no grit – no leaks
Jai L. Walsh –
no grit, dispersed straight away • friendly support • would reorder