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From our technical experts


Blue Horizons Ultimate Winter Time Winteriser Long Life Algaecide 5Litres + 4 x Shock Sachets

Original price was: £50.00.Current price is: £46.95.

  • Shock & Algaecide Package
  • Treats up to 15,000 gallons
  • Prevents staining & scale build-up
  • Chlorine & Bromine compatible
SKU: 1460 Categories: , ,


This algaecide and shock package includes:

5 litres of BLUE HORIZON ULTIMATE WINTER TIME WINTERISER – treats up to 15,000 gallons
4 x 175g Fast Acting Shock Treatment sachets – treats up to 5,000 gallons per sachet

The long lasting, copper-free algaecide liquid treats up to 15,000 gallons and prevents staining & scale formation. It is compatible with chlorine, bromine & biguanide treated pools. Blue Horizons Ultimate Winter Time Winteriser is a long-life copper-free algaecide formulated to prevent algae growth during the late autumn, winter and early spring in outdoor swimming pools. One dose will help prevent algae growth for up to six months. Ultimate Winter Time Winteriser also helps to minimise the likelihood of stains and scale deposits during the closed season. It can also be used for Summer treatments as well.

Other products required for winterisation are pH Plus or pH Minus to balance the pool water.

  • Copper free winter algaecide
  • Prevents staining & scale build-up
  • Tolerant to pH range fluctuation
  • Suitable for chlorine or bromine treated pools
  • Free Winterisation Guide included (WHILE STOCKS LAST)

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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