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From our technical experts

5kg 20g Acti Chlorine Tablets


  • Mini 20g Chlorine Tablets
  • Designed for use with chlorine feeders or floating dispensers
  • Available in 1kg, 2kg & 5kg containers
SKU: ACT-500-0161 Categories: ,


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.

Mini 20g Chlorine Tablets
These small chlorine tablets will slowly erode over a period of 3-5 days depending on the water flowing over them.
Prior to using these chlorine tablets, adjust the pH levels to the ideal range of 7.2 – 7.6 to promote bather comfort and effective chemical use.
These tablets are designed for use with chlorine feeders or floating dispensers. As they release chlorine relatively slowly it may be necessary to shock or oxidise prior to their use to first establish some chlorine more rapidly. Ideal chlorine levels are between 1-3 mg/l (ppm).
If using a Floating Dispenser fill with tablets and adjust the aperture mechanism at the bottom of the dispenser to obtain the 1-3 mg/l (ppm) desired range. Alternatively keep the dispenser aperture constant and vary the tablets inside to achieve 1-3 mg/l (ppm).
The dispenser should be removed from the pool while swimmers are bathing.
Chlorine Feeders: If you are using a feeder fill the dispenser and follow the instruction manual on flow regulation to maintain 1-3 mg/l (ppm) chlorine levels.
DOWNLOAD our easy to follow ‘How to care for your pool’ guide – which will tell you everything you need to know.
Download ‘How to care for your pool‘ with our easy to follow guide – here

Additional information

Weight 5 kg

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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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