Description
Introducing the Deep Blue Professional – Mini 20g STABILISED Chlorine Tablets x1000 20kg SLOW RELEASE, the ultimate solution for maintaining clean and bacteria-free hot tub and swimming pool water. These stabilised chlorine tablets are designed to minimize chlorine loss to sunlight, ensuring a steady release of chlorine over 2-4 days, depending on water flow.
Perfect for use in floating dispensers, chemical feeds, and skimmer baskets, these tablets are a convenient and effective way to keep your water safe and healthy. By applying them regularly, you can achieve the recommended free chlorine levels of 3-5 mg/l for hot tubs and 1-3 mg/l for swimming pools, without significantly impacting the water’s pH balance.
These tablets are long-lasting and slow-release, providing a consistent level of chlorine to combat bacteria and other harmful organisms. They come in multiples of smaller tubs ranging from 1kg to 10kg, ensuring you have an ample supply to keep your water clean and clear.
The key features of these stabilised chlorine tablets include their ability to maintain a free chlorine range of 3-5mg/l for hot tubs and 1-3mg/l for swimming pools. They are essential for regular dosing, producing free active chlorine that effectively eliminates contaminants. With a high level of available chlorine and chlorine stabiliser, these tablets offer maximum protection for your water.
When applying these tablets, it’s crucial to follow the recommended application instructions for optimal results. Maintaining the pH level within the ideal range of 7.2-7.6 is essential, and adjustments can be made using pH plus or pH minus products if needed. Additionally, keeping free chlorine residuals within the specified range is vital for the overall health of your hot tub or swimming pool.
For floating dispensers, simply fill the dispenser with tablets and adjust the aperture mechanism to achieve the desired chlorine level. The same principle applies to chlorine feeders and skimmer baskets, ensuring that the correct amount of tablets is used to maintain the required chlorine levels.
It is also recommended to periodically shock dose your pool to eliminate any excess contamination, especially after heavy use. Dose rates may vary depending on water flow rate and temperature, so it’s important to monitor the levels and adjust as needed.
For medium hot tubs containing 1,000 liters of water, approximately 1 tablet is needed to increase the chlorine level by 1mg/l, while 3 tablets are required for a 3mg/l increase. Similarly, for large hot tubs with 1,500 liters of water, 2 tablets can raise the chlorine level by 1mg/l, and 6 tablets for a 3mg/l increase. For swimming pools, adding 1 tablet per 4,500 liters of water is recommended.
Don’t miss out on the benefits of the Deep Blue Professional – Mini 20g STABILISED Chlorine Tablets x1000 20kg SLOW RELEASE. Keep your hot tub or swimming pool water crystal clear and safe for all to enjoy with these high-quality chlorine tablets.







Daisy Campbell-Cox (verified owner) –
Maintained chlorine on point all week, quick turnaround, fast delivery
Dr Suresh Lee –
Stayed free chlorine consistent without fuss | arrived next day
Dr Hannah Scott –
Kept up levels stable nicely – feels premium | arrived sooner than expected
Miss Rahul Holmes –
Held free chlorine consistent nicely, support sorted it fast
Ms Arthur V. Doyle-Lee –
Kept sanitiser consistent day to day; good quality
Evie Reed –
Kept up sanitiser stable day to day without crumbling, support was helpful
Dr U. B. Stewart (verified owner) –
Held levels steady nicely; quick advice from support
Mr Hayley Fleming –
Kept chlorine stable for days with no residue; sent out same day
G. W. MacLeod –
Stayed sanitiser steady all week with no, arrived sooner than expected
Stewart Thompson –
Held free chlorine steady day to day | helpful on chat
Dr Ruby Gallagher (verified owner) –
Kept up chlorine stable all week – delivered quick
Mrs Henry Y. Lee (verified owner) –
Maintained sanitiser on point for days, delivery was spot on
Alice H. Fisher (verified owner) –
Stayed free chlorine consistent without fuss with no residue; fast delivery
Dr Julia B. Lee –
Held levels on point without fuss – no crumbs, arrived sooner than expected
Kavya Allen –
Kept levels on point all week; helpful on chat
Miss Hamish K. Thomas –
Maintained chlorine on point for days – no crumbs, sealed properly
Ms Joshua W. Watson (verified owner) –
Kept free chlorine steady all week; sealed properly
Lauren O’Connor –
Kept levels steady all week • fresh stock
Ms Murdo O. Reddy (verified owner) –
Kept free chlorine stable without fuss, turned up fast
Ahmed L. O’Connor (verified owner) –
Maintained free chlorine consistent nicely, came the next day
Mrs Ciara White-Mahmood (verified owner) –
Held levels stable without fuss | helpful customer service
Ms S. C. Barnes (verified owner) –
Kept up free chlorine steady without fuss • delivery was spot on
Ms Sajid Singh (verified owner) –
Kept up chlorine consistent for days with no residue • no leaks
Mrs Rowena Akhtar (verified owner) –
Stayed chlorine consistent all week | well packed
Neha Campbell-Hughes (verified owner) –
Kept up sanitiser stable all week | no leaks
Isobel M. Khan (verified owner) –
Maintained sanitiser on point all week, came in 2 days
Patrick Kennedy –
Held chlorine consistent day to day without, dropped through quickly
Miss Joseph Anderson (verified owner) –
Kept sanitiser stable all week; good quality, on time delivery
D. U. Dhillon –
Kept sanitiser stable all week | no mess in the box
Miss Mia Akhtar (verified owner) –
Stayed free chlorine on point day to day – well packed
Mr Stephen Douglas –
Held free chlorine steady all week – delivered quick
Mrs Nathan Singh (verified owner) –
Maintained sanitiser on point day to day – no, quick advice from support
William K. Bishop –
Kept up sanitiser stable without fuss – no crumbs, on time delivery
E. V. McLean (verified owner) –
Stayed free chlorine steady for days – helpful customer service
Jack Fisher –
Kept up levels steady day to day; support knew their stuff
Zachary K. Hughes (verified owner) –
Held sanitiser on point all week, no delays at all
Mr Benjamin D. Harrison (verified owner) –
Stayed chlorine steady nicely – no crumbs, feels premium
Simon P. Foster (verified owner) –
Kept chlorine consistent all week | good quality
Hafsa Murray –
Kept levels stable nicely with no residue – helpful on chat
William M. Dhillon –
Kept up levels on point day to day – no crumbs – good aftersales
Chloe Reddy –
Held free chlorine stable day to day, no delays at all
Mrs H. Reilly –
Kept up chlorine steady nicely – no crumbs; on time delivery
Ms Arjun U. Johnstone (verified owner) –
Kept up chlorine stable nicely, dropped through quickly
Leo Byrne (verified owner) –
Kept sanitiser consistent without fuss | feels premium
V. O. Harper –
Maintained free chlorine steady without fuss – no crumbs, friendly support
Ismail Uddin –
Kept up levels stable for days without crumbling | great packaging
Jack Mahmood (verified owner) –
Kept levels consistent for days – good quality, well packed
Ms Usman G. MacDonald –
Stayed free chlorine consistent without fuss | no leaks
Miss Ben Jackson (verified owner) –
Stayed free chlorine on point for days; turned up fast
Meera Allen (verified owner) –
Kept levels on point for days – no crumbs – no mess in the box
Ms Tamsin Begum –
Kept up chlorine consistent day to day | delivery was spot on | fresh stock
Mr Daisy U. Hamilton (verified owner) –
Kept chlorine steady for days, came the next day • fast delivery
Miss Sofia Shaw –
Stayed free chlorine consistent nicely, came the next day
Sanjay Ward (verified owner) –
Kept up chlorine steady day to day • friendly support
Fatima Anderson –
Maintained chlorine on point day to day without, no mess in the box
N. Q. Wright –
Held free chlorine on point for days, sealed properly
Victoria H. Watson (verified owner) –
Kept up sanitiser on point nicely without crumbling; no mess in the box
Miss Kirsty Begum –
Stayed levels steady for days; no delays at all
Louie Stewart (verified owner) –
Held levels steady nicely; sealed properly • no leaks
Georgia Kennedy –
Stayed chlorine consistent without fuss – came in 2 days
Rory Martin –
Kept up free chlorine consistent for days with no residue – no leaks
Miss Carter Gibson –
Held free chlorine stable without fuss with no residue, packaging was solid
Tom Collins –
Outstanding pool experience
C. X. Bennett (verified owner) –
Maintained levels consistent without fuss without, clean and tidy pack
Emma Fisher –
Pleased
Joan Carroll –
A+ in quality and service.
Terry W. –
Engineered for reliability and peak performance
shoelover –
Fast and friendly delivery
Carter Nair-James –
Stayed sanitiser steady all week – no crumbs – came in 2 days
Mr Alice Ahmed –
Held chlorine stable for days | turned up fast
Mrs Cameron E. Fisher –
Stayed sanitiser consistent all week • tamper seal intact
Miss Jordan Wilson –
Maintained chlorine consistent for days – no crumbs, feels premium
Mason O. Hawkins (verified owner) –
Kept levels consistent all week without crumbling; well packed
Teddy V. Pearson –
Stayed sanitiser stable without fuss – no crumbs; came in 2 days, no leaks
Mrs Yusuf Kennedy –
Held sanitiser steady all week • dropped through quickly | good aftersales
Anthony Helling –
Top tier pool gear
Mr A. L. Douglas –
Maintained sanitiser on point for days; fresh stock
Mrs Lachlan Phillips (verified owner) –
Kept up free chlorine consistent for days, delivery was spot on
Miss Anthony Taylor –
Held levels consistent for days | properly sealed, no issues
Rowena Iyer –
Kept chlorine consistent without fuss, came in 2 days
Dr. Peter Gossman –
Consistent excellence in every product.
JACQUI MORPHEW (verified owner) –
I appreciated the easy return process.
Fiona Green (verified owner) –
Stayed sanitiser stable without fuss with no residue; well packed
Devece –
Crafted to deliver long-lasting satisfaction
Mrs Kieran Nair –
Kept sanitiser stable without fuss with no residue, no leaks
Maddy49 –
Remarkable efficiency in every aspect
Mr Naveen J. Malik (verified owner) –
Stayed sanitiser steady for days – no crumbs; no leaks
Chantelle McCarthy-Reynolds (verified owner) –
Kept sanitiser steady without fuss – no crumbs | on time delivery
Priya L. Moore (verified owner) –
Stayed free chlorine on point nicely; no mess in the box
Miss Dev F. Haque-Iqbal –
Held sanitiser stable for days with no residue, arrived next day
Mrs Aaron Cooper –
Held sanitiser stable day to day | delivered quick | arrived next day
Ms Henry Robertson –
Stayed chlorine on point for days • label is clear
Mr. S. Carnachan (verified owner) –
Trustworthy quality for pool enthusiasts everywhere.
Mrs Kabir Gray (verified owner) –
Stayed free chlorine consistent without fuss – no, support was helpful
Maryam Chandra (verified owner) –
Kept up chlorine stable for days with no residue • great packaging
Mrs Harrison MacDonald –
Kept up free chlorine consistent day to day | label is clear
Mr Andrew King-Johnson (verified owner) –
Kept chlorine on point nicely without crumbling – packaging was solid
Mr Gemma Johnson –
Kept chlorine steady day to day without crumbling | delivered quick
mr edward p lewsley –
Works as it should
N. Nair (verified owner) –
Kept up free chlorine stable without fuss, arrived sooner than expected
Z. K. Murray –
Held chlorine steady for days with no residue; delivered quick
Anwar D. Sharma-Crawford (verified owner) –
Kept up sanitiser stable without fuss with no residue, delivery was spot on
Mr Maya Harrison –
Stayed free chlorine consistent without fuss – no, clean and tidy pack
Neha X. McLean (verified owner) –
Kept up chlorine on point nicely with no residue; delivered quick
Mrs Rachel Nair –
Kept up sanitiser on point for days – no crumbs, great packaging
Mrs Jude N. Wright (verified owner) –
The proper pro-grade stuff; straightforward to apply!
Mrs Jude N. Wright (verified owner) –
The proper pro-grade stuff; straightforward to apply!
Victoria Green –
Helped me with dosing straight away; good value for money
Victoria Green –
Helped me with dosing straight away; good value for money
Liam Patel (verified owner) –
Kept free chlorine on point without fuss with no residue – great packaging
Alfie Mason –
Great service, order was spot on.
Miss Martin Green (verified owner) –
Arrived next day, great quality.
Dr U. P. Roberts (verified owner) –
Kept up chlorine on point all week with no residue, good aftersales
Daisy Stewart (verified owner) –
Held sanitiser stable for days – no crumbs • packaging was solid
Dr Cameron Armstrong –
Held sanitiser stable for days; good quality
Mrs Brodie Sharma (verified owner) –
Stayed free chlorine stable day to day, delivery was spot on
Khadija A. Ryan –
Held levels on point all week – no crumbs, no delays at all, post was rapid
Miss Toby Wright-Sandhu (verified owner) –
Delivered really fast, the great product quality, these tablets were easy to handle…
Miss Toby Wright-Sandhu (verified owner) –
Delivered really fast, the great product quality, these tablets were easy to handle…
Owen Hamilton –
Fast delivery and does the job.
Louise Holmes (verified owner) –
The top notch quality; did the job fast; easy to get right first time
Louise Holmes (verified owner) –
The top notch quality; did the job fast; easy to get right first time
Dr D. X. Brar –
Strong tablets, steady chlorine level.
Eleanor Siddiqui (verified owner) –
They answered my question! fast – instructions were clear!!
Eleanor Siddiqui (verified owner) –
They answered my question! fast – instructions were clear!!
Ms Sara Palmer –
The feels well made; arrived in!! perfect condition!
Ms Sara Palmer –
The feels well made; arrived in!! perfect condition!
Ms Martin C. Nair –
Good quality stuff, will buy again.
Mrs Clare Bishop –
Stayed sanitiser on point all week with no residue | speedy dispatch
Rishi Davies-Byrne –
The proper pro-grade stuff, easy to use; sealed properly!
Rishi Davies-Byrne –
The proper pro-grade stuff, easy to use; sealed properly!
Mrs Elliot Jones –
Kept up levels steady nicely without crumbling | sent out same day
Mr O. Q. Macleod (verified owner) –
Maintained free chlorine stable for days; good quality
Miss Fatima Price –
Kept up free chlorine consistent nicely without crumbling, post was rapid
Peter Ryan –
Maintained free chlorine stable for days, packaging was solid
Sean E. Hunt –
Maintained free chlorine stable day to day • label is clear
Mrs Ian Cook –
Kept chlorine steady without fuss | clean and tidy pack
Miss Hassan Gallagher –
Stayed chlorine steady day to day – no crumbs, fresh stock
Rosie Z. James –
Support replied fast, very helpful.
Mohammed R. Fraser –
Arrvied fast, arrived in perfect condition; well packed
Ms Ethan Gupta (verified owner) –
Stayed chlorine consistent without fuss; customer service was ace
Naveen Iyer (verified owner) –
Delivered fast, tablets work a treat.
Dr Manpreet Barnes (verified owner) –
Stayed free chlorine consistent all week • no leaks
Miss Archie Cunningham (verified owner) –
Kept up levels on point day to day; tamper seal intact
S. J. Hawkins-Brown (verified owner) –
Stayed levels consistent day to day without, support sorted it fast
Gavin Sharma –
Tablets arrived quick, water cleared fast.
Mrs O. A. Ahmed-MacLeod (verified owner) –
Good value and works as described.
Daniel Anderson –
Held sanitiser steady without fuss, label is clear | speedy dispatch
Miss Douglas N. Robertson –
Quick delivery, water looked clearer.
Mr I. Q. O’Brien –
Kept up free chlorine steady nicely with no residue, fast delivery
Mrs Isaac N. Bishop –
Kept chlorine consistent for days | post was rapid, worth it
Mrs Elizabeth Price –
Quick delivery, helpful after-sales support and arrived in perfect condition
Archie Murphy-Rahman –
Held levels stable nicely • well packed
Miss Simon Wright –
The top notch quality – Customer service was spot on!!
Miss Simon Wright –
The top notch quality – Customer service was spot on!!
Kian MacDonald –
Kept up levels stable for days, dropped through quickly, well packed