Advanced Pool Water Treatment in the Algarve

Conventional pool treatment relies on chlorine to kill bacteria. DAISY stops bacteria growing in the first place, which means the pool needs 50 to 80 per cent less chlorine. Dryden Aqua describe the result as drinking water quality.

The core of the system is AFM, an activated glass filter media that replaces sand. Sand filters harbour bacteria, and over time a biofilm builds up inside them that works against you. AFM resists colonisation entirely and filters down to 0.1 micron, fine enough to strip out the nutrients bacteria need to establish themselves.

ACO, the other key component, is a chlorine stabiliser that works with the Algarve sun rather than against it. UV normally breaks chlorine down, but ACO reverses that process, so the residual chlorine in the pool lasts longer here than it would in a cooler climate.

The full DAISY+ system adds the DA-GEN, a unit that generates its own disinfectant from a very low salt concentration. The by-products that come with conventional chlorine (the smell, the eye irritation, the damage to swimwear) are largely absent.

We install the full system in a single visit and look after it as part of our regular pool maintenance. AFM lasts considerably longer than sand, which keeps long-term running costs down.