Swimming Pool Chemicals - Blue Horizons 600g Multifunctional Chlorine Tablet

£10.95
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  • Blue Horizons Multifunction 600g Chlorine Tablet.
  • Long lasting holiday treatment
  • Contains algaecide and clarifier
  • Slow realease sanitiser
  • Dissolves over a 3-5 week period depending on water flow passing over it
  • Pop into the skimmer whilst on holiday
  • Part of the BOAST system

The most common way to kill bacteria in your pool and keep your swimming pool water healthy is to use chlorine. Before using chlorine, it is important to have a correct water balance first. Once this has been achieved, chlorine levels between 1.0-3.0 mg/l should be satisfactory to preserve bacteria free swimming pool water. There are two ways to tell if your pool is a well-managed chlorine treated swimming pool is that
it will have no odour and the level of chloramines will be less than 0.5 mg/l. Here at Cascade Pools we have a wide range of swimming pool chemicals for you to choose from to suit your swimming pool requirements.

  • Blue Horizons Multifunctional 600g Chlorine Block containing algaecide and clarifier. pH 3.0
  • This product is an ideal holiday treatment as the tablet is designed to erode over 12-20 days depending on the amount of water flowing over it.
  • Prior to using this product adjust the pH level to the ideal range of 7.2 - 7.6. Chlorine levels should be maintained between 1-3ppm.
  • Application Instructions: Remove the circular tab, prise open the lid and place the container and its contents in the skimmer basket. Keep the filtration running as normal. This will allow water to flow over the Multifunction block, helping to maintain a chlorine level in the pool.
  • As a guide use one Multifunction block for pools up to 10000 gallons or two Multifunction blocks for pools over 10000 gallons.
  • NOTE: The pool filtration water flow is unique to each swimming pool so dose rates may need to vary due to each pools circumstances.
  • Guide Thumb

    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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