Best Pool Chemicals & Testing — Blue Horizons (2026)
1 pool chemicals & testing matching brand “Blue Horizons”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Pool Chemicals & Testing UK (2026) guide.

£36.00
Pros
- Large 200g slow-dissolving tablets reduce how often you need to top up the feeder
- 5kg tub gives a full season of chlorination for most family pools
- Multifunction formula also helps control algae and clarify water
Cons
- Large tablet size is better suited to skimmers/feeders than small floaters
Blue Horizons Pool Chemicals & Testing offers a comprehensive solution for maintaining crystal-clear water in your swimming pool. This dedicated range focuses exclusively on products from Blue Horizons, known for their reliable formulations and commitment to pool care excellence. We’ve curated a selection of chemicals specifically designed for optimal performance alongside testing kits that provide accurate readings, ensuring you can proactively manage every aspect of your pool's health.
This collection includes essential pool chemicals like shock treatments and algaecides, formulated with Blue Horizons' signature blend for effective sanitization. Alongside these powerful treatments, you’ll find a range of test strips and liquid testers designed to monitor pH, chlorine levels, alkalinity, and hardness – crucial indicators of water balance. Accurate testing allows you to adjust your chemical additions precisely, preventing imbalances that can damage equipment or irritate swimmers.
Maintaining optimal pool chemistry is paramount for both the longevity of your pool equipment and the safety of those enjoying it. Blue Horizons’ products, combined with our comprehensive testing kits, provide the tools needed to consistently achieve sparkling clean water and a healthy swimming environment. Invest in peace of mind knowing your pool is protected by trusted formulations and accurate monitoring.
FAQ
What types of chemicals are included in the Blue Horizons range?
The Blue Horizons collection primarily includes shock treatments, algaecides, chlorine tablets, pH adjusters (both raising and lowering), and alkalinity buffers. These products are formulated for general pool maintenance and addressing specific water imbalances.
How accurate are the Blue Horizons test strips?
Blue Horizons test strips are designed to provide reasonably accurate readings within a standard range. However, for highly precise measurements, especially in pools with unusual conditions or after heavy use, we recommend supplementing with liquid testers for greater accuracy.
Do I need any specific equipment to use the Blue Horizons test kits?
You’ll need a clean pool surface and access to potable water. A measuring cylinder is useful for accurate dilution of the testing solutions, ensuring precise readings across different pool volumes.
How often should I test my pool water with these products?
Ideally, you should test your pool water at least twice per week, or more frequently during periods of heavy use or after rainfall. Regular testing allows you to identify and address issues before they escalate.
What does ‘pH’ mean in relation to pool water?
pH measures the acidity or alkalinity of your pool water. Maintaining a pH level between 7.2 and 7.8 is crucial for effective chlorine performance, preventing damage to pool surfaces and ensuring swimmer comfort.
Can I use these chemicals with saltwater pools?
Yes, many Blue Horizons products are suitable for saltwater pools, but always check the specific product label for compatibility. Some formulations may require adjustments to your salt levels.
How do I calculate the amount of chemical needed based on my pool volume?
You'll need to know your pool’s volume in gallons or litres. Each Blue Horizons product will have a dosage recommendation per specific volume, so measure accurately for optimal results.
What happens if my chlorine level is too high?
High chlorine levels can irritate swimmers and damage pool equipment. Reduce the chlorine level by adding a pH reducer specifically designed to lower alkalinity or by carefully diluting the water with fresh water.
Are these products safe for children and pets?
Always follow the manufacturer’s instructions carefully when handling and applying pool chemicals. Store all products out of reach of children and pets, and ensure adequate ventilation in the area where you are working.
What if I'm not sure which chemical to use for a specific problem?
If you're unsure about the best chemical to address a particular issue, consult with a qualified pool professional or refer to detailed product information on the Blue Horizons website. Proper diagnosis is key to effective treatment.