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.
£33.25
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