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From our technical experts

Kleen Pool Longlasting Algaecide


  • Just ONE TREATMENT keeps your pool clear from algae for up to six months
  • Spring or Winter treatment
SKU: BOL-500-0039 Categories: ,



Kleen Pool Longlife Algaecide – Simple pool water maintenance in one treatment


Algae are microscopic plant life that can multiply rapidly in your swimming pool water in the right conditions. Recovering an algae infested pool can be time consuming and expensive which is why prevention is always preferable to cure. Our range of algaecides have been specially formulated to help you achieve sparkling clear and algae free water. We offer you a choice of weekly dosed and long life algaecides depending on your particular needs. Kleen Pool Algaecide is one of the UK’s most popular long life Algaecides. It is a copper based product that remains active in the pool for up to 6 months. Use after spring commissioning or winter close down to keep your pool water sparkling clear and free of algae.

  • Kleen Pool will prevent algae growth for up to 6 months making it the ideal winterising treatment
  • One litre of Kleen Pool treats up to 6200 gallons and can be used for Summer and Winter (photo shows different sides of the same box)
  • One simple application will free you from the problems caused by algae blooms, discolouration and hazes which can affect the appearance of your pool
  • When your pool is not being used for swimming during holidays and the winter, Kleen Pool will keep your pool clear and free from most algae without the use of other pool chemicals
  • Kleen Pool Algaecide should not be mixed in a plastic bucket with other chemicals. It should be added directly to the pool water.


IMPORTANT: Badly scaled pools may cause elevated pH conditions above the recommended range. Pools with scale should be descaled before using Kleen Pool and pH should be adjusted between 7.2 – 7.6 to maximise effectiveness.
Pools with tiled, Marblite or painted surfaces may have a rough surface due to calcium scaling. If so, the pool should be acid washed prior to using Kleen Pool Longlife Algaecide.

Always follow the instructions on the box before using the product. Please see our winter pool guide, giving you help and advice on how to winterise your pool.

How to treat green water

Find out all you need to know about algae and green water, how to treat it and how to cure it.

Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 7 working days for a full refund not including the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or incorrectly-described.

Exclusions: Bespoke items (made to measure items) are not included and cannot be returned. If a bespoke item is faulty then the product warranty /guarantee will take effect.

Any goods returned should be in saleable condition.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.

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