Request a free Catalogue

Free Expert Advice

Free Site Visit

Ask us to Price Match

Free Delivery Over £60

Swimming Pool Troubleshooting

PROBLEM	POSSIBLE CAUSE	REASON	SOLUTION	PRODUCT REQUIRED
Cloudy Water	Build up of dirt & bather pollution	Ineffective chlorine levels or poor filtration	Backwash filter, then shock treat. Add clarifier to polish water.	All Swim Shock, Crystal Clear & Super Crystal Clear
	Start of Algae growth	Insufficient levels of chlorine	Shock treat. After 24 hours backwash filter. Maintain chlorine level above 1.5ppm. Prevent re-occurrence of algae growth	All Swim Shock, All Swim Cyanachlor, Algicide & Kleen Pool
	Chlorine ineffective	Over stabilisation	Dilute pool water and shock treat	All Swim Shock
	Ineffective filtration	Filter blocked or filter media needs renewing	Check filter media or cartridge	See ineffective filtration for more detail (bottom of page)
	Suspended particles	Precipitation of salts due to high pH or high alkalinity	Correct pH and/or alkalinity	All Swim Pool Acid, Crystal Clear & Super Crystal Clear
Unpleasant Water	High combined chlorine's	Free chlorine levels too low	Dilute pool water and shock treat	All Swim Shock
Eye Irritation	Detergents from cleaning compounds getting into pool water	Reaction between chlorine and detergent	Use chlorine compatible cleaners	All Swim Tile & Liner Cleaner
Sore eyes / throat	Water too acid / alkaline	pH too low / pH too high	Correct pH / Correct pH	All Swim Pak 2 & All Swim Pool Acid
Chlorine level difficult to maintain	Sunlight destroying chlorine	Chlorine not stabilised	Use stabiliser or stabilised chlorine	All Swim Conditioner & All Swim Cyanachlor
	Build up of pollutants	Insufficient chlorine	Shock treat	All Swim Shock
	High water temperature	Organisms multiply more quickly	Increase dose of sanitizer	All Swim Cyanachlor or HTH
No chlorine reading despite adding chlorine	Chlorine level may be too high	High chlorine level bleaches reagent in test tablet	Allow chlorine to reduce naturally over a period of time	Contact All Swim
pH too low	low pH of local water supply	Insufficient alkali	Add alkali - ideal pH 7.2 - 7.6	All Swim Pak 2
pH too low	Use of acidic chlorine donors	Insufficient alkali	Add alkali - ideal pH 7.2 - 7.6	All Swim Pak 2
pH too high	High pH of local water supply	Insufficient dry acid	Add dry acid - ideal pH 7.2 - 7.6	All Swim Pool Acid
	Use of alkaline chlorine donors	High alkalinity	Reduce alkalinity to 125ppm check pH	All Swim Pool Acid
	Salts being leached from new concrete pools	Self correcting over a period of time	Add dry acid - ideal pH 7.2 - 7.6	All Swim Pool Acid
pH erratic	Insufficient bicarbonate to buffer pH	Low total alkalinity	Add bicarbonate - ideal 125ppm	All Swim Pak 1
pH locked	Too high a level of bicarbonate	Topping up from mains water can increase alkalinity in hard water areas	Reduce alkalinity to 125ppm check pH	All Swim Pool Acid
Low alkalinity	Bicarbonates reduced by dilution, particularly in soft water areas	Mains water has low levels of bicarbonates	Add bicarbonate minimum 75ppm, consult All Swim	All Swim Pak 1
Pool walls feel slimy	Algae growing	Insufficient chlorine	Shock treat to kill algae, sweep and vacuum pool. Prevent recurrence with algicide, brush pool walls	Algicide or Kleen Pool
Dirt on pool wall at water level	Build up of fat, oil & cosmetics	Irregular cleaning of surfaces	Clean with sponge & suitable detergent	All Swim Tile & Liner cleaner
Sharp edges around tiles	Grout being leached by water	Water too soft	Re-grout pool. Increase calcium levels to minimum 175ppm. Consider changing to HTH	HTH
Ineffective Filtration	Incorrect sand level in filter	Not enough sand to filter out particles	Renew and/or top up sand	.
	Correct level of sand	Blocked filter / filter sand	Backwash & use filter aid	Filter Clear
	Cartridge filter in poor condition	Filter allowing particles through	Renew Cartridge	Crystal Clear or Super Crystal Clear

What Our Customers Are Saying

"Big thanks to Jane and her team. Just completed my first ever DIY pool! I’m quite surprised how straightforward it can be if you use the right people."

"What a wonderful team and fantastic service from start to finish! All Swim have supplied me with a beautiful tub at a fantastic price."

"Very helpful and provided a quick service without limiting quality. Much appreciated and highly recommend for any pool related purchases."

"Helpful staff."

"Get everything from here, good displays and very knowledgeable as been doing it for a long time."

"All Swim have once again provided first rate customer service throughout a large pool project in Surrey. I would without hesitation recommend them."

I have been a customer of All swim for over 8 years now, and have been back for for many different reasons. I would definitely recommend using them."

Bought a fantastic hot tub from these just over three months ago now. The support and help they have offered along the way has been truly awesome."

Fantastic show room with very helpful staff. We bought a hot tub from them, we had a great deal and very helpful after sales service.

"I just want to say what a fantastic service. Ordered late Tuesday, goods arrived beautifully packaged Thursday. Well done and thank you."

"The service and advice from everyone at All Swim has been fantastic, highly recommend this company. Thank you for everything."

"Thank you for the very quick delivery on the items ordered only yesterday the shock treatment already in the pool all in less than 24 Hrs."

"A professional company, well run and well managed and at home dealing with professionals or those starting off in the pool/spa life."

"We have been customers of All Swim for over 12 years and have always had lots of help and support from them."

"I would have no hesitation in recommending your company to anyone wishing to have a pool constructed."

"I am really impressed by all aspects of our current business dealings."

"We always receive a brilliant personal service and we always have service with a smile!"

"Bought our tub in the summer, superb service from all staff at All Swim. Nothing was too much trouble."

"We are over the moon with our Catalina Hot Tub, we received the best advice and what a friendly service."

"I am very pleased with the service I receive from All Swim, good sound advice and very professional."

"I have had so many years of excellent service I will continue to buy my supplies from All Swim."

"I have no hesitation in recommending your company, All Swim make it easy and painless."

Jason Davis, Blackwood

Jess L, South Wales

Tom, South Wales

Eveline Jones, South Wales

Dave Williams, South Wales

Chris McHale, Surrey

Julie Hann, Cardiff

Shaun Connolly, Newport

Allun Thomas, Bridgend

Laurence Jenkins, Cornwall

Tina Cowdery, Porthcawl

T Fox, Devon

Marc Adams Jones, Cardiff

Chris and Paul Westwood, Brecon

Bill Bennett, Formby

Peter Lane, Bristol

Mr & Mrs Yates, Cardiff

Miss O'Donnell, Merthyr Tydfil

Mr & Mrs Harris, Newport

Mr R Andrew, Gloucester

Mr Wetters, Manchester

Mr Gaukroger, Hereford

Visit our Cardiff Showroom for everything hot tubs, swimming pools and swim spas

Our showroom here in Cardiff is simply packed with industry leading brands so if you're looking to buy hot tubs, swim spas or maybe a swimming pool and jacuzzi, All Swim is a great place to start! Hot tubs are becoming an ever more popular addition to UK homes and making the right choice for you and your family has never been more important. All Swim offers the very best advice on buying hot tubs and our range of Caldera Spas and Fantasy Spas won't disappoint. Made by Watkins Wellness, the world's leading supplier of hot tubs with over a million sales to date, you can rest assured you're buying the very best quality hot tub for you and your family. We also offer a range of flexible hot tub finance packages to help you spread the cost of buying your chosen hot tub!

We also understand that looking after water in hot tubs can be a daunting prospect, particularly if you're buying for the first time. That's why we offer free, ongoing support and advice to every customer on looking after hot tubs and our friendly, knowledgeable sales staff are always happy to help. If you need help with hot tub chemicals simply visit our Cardiff showroom or order online for next working day delivery.

So why buy hot tubs from All Swim? Well, we look after our customers through the whole process, from hot tub purchase to installation. We're also a family run business with years of experience so there isn't much we don't know about hot tubs! We like to recommend on individual customer needs, not on sales targets so you won't feel pressured into making that important decision and our hot tubs are built to last, not to price so you can enjoy years of trouble free hot tub use.

All Swim are also specialist suppliers of DIY (self build) in-ground swimming pool kits and have years of experience that you can rely on to give you the best advice and after sales service. Whether you are considering a concrete inground pool, a fibreglass one piece inground pool, an above ground swimming pool, or one of our inground liner pool kits, All Swim support staff are there to give help and advice every step of the way. Haven't got the space for a DIY swimming pool? Why not take a look at our superb range of Endless Pools swim spas, incredible swim in place technology and aquatic fitness systems for novice swimmers and runners to triathletes and ironman contenders.

Our Cardiff based showroom is within easy reach of other South Wales towns such as Swansea, Bridgend, Cowbridge, Llanelli, Barry, Newport, Cwmbran and even Bristol but we deliver throughout the UK.

For further advice and guidance on all aspects of in-ground swimming pool kits, please call us on 02920 705059 or refer to our Help & Support section.

All Swim is authorised and regulated by the Financial Conduct Authority.

All Swim Ltd is a credit broker and not the lender, and only offers credit products from Hitachi Personal Finance, a division of Hitachi Capital (UK) PLC authorised and regulated by the Financial Conduct Authority. Registered in Cardiff no. 1630491. Registered office: Hitachi Capital House, Thorpe Road, Staines-upon-Thames, Surrey, TW18 3HP.