Description
Rijo Defence – 1 L is a liquid maintenance product for pool and spa water that helps prevent and control limescale, metal stains, and cloudy water. The product is designed to bind dissolved minerals and metals in the water, making them less likely to precipitate onto the pool walls, spa, pipes, heating, and filter system.
Thanks to its organic phosphonate components, Rijo Defence acts as a sequestering agent. This keeps substances such as calcium and dissolved metals better bound in the water rather than causing visible deposits and discoloration.
Protection against limescale
Hard pool water contains a relatively high amount of dissolved minerals, including calcium. Under certain conditions, calcium can precipitate and cause hard, white, or gray limescale deposits.
This buildup can become visible on, among other things:
- Pool walls and floor
- Waterline
- Tiles
- Spa surfaces
- Pipes
- Filters
- Heating elements
- Heat exchangers
Rijo Defence helps reduce the formation of such mineral deposits by keeping the minerals present in solution.
Helps prevent metal stains
In addition to limescale, dissolved metals can cause problems. Especially iron, copper, and manganese can oxidize under certain conditions and cause discoloration.
This can manifest as brown, reddish, green, blue, or dark stains and discoloration of the pool water.
Rijo Defence binds dissolved metal ions, thereby helping to prevent them from depositing on pool or spa surfaces.
Reduces risk of cloudy water
Minerals and metals can also contribute to turbidity. When dissolved components react or begin to precipitate, small suspended particles can form.
By stabilizing these substances, Rijo Defence helps reduce the risk of mineral-related cloudiness and supports the maintenance of clear pool or spa water.
Ideal for hard or mineral-rich fill water
Rijo Defence is particularly valuable when the fill water used contains relatively high levels of lime or metals.
For example, in situations where limescale or discoloration occurs quickly after filling, or when a water analysis shows the presence of iron, copper, or manganese.
The product can be used both preventively and as part of maintenance when there is an increased risk of deposits.
Supports the protection of pool equipment
Limescale does not remain visible only on the pool wall. Minerals can also deposit inside components of the technical installation.
Rijo Defence helps limit the risk of mineral deposits, thereby supporting the maintenance of pipes, filters, and heating components, among others.
The product does not, of course, replace proper water balance. pH, alkalinity, hardness, and disinfection levels must be checked regularly.
Extra protection for pool and spa
With Rijo Defence – 1 L, you add an extra layer of protection to your pool or spa water treatment. The liquid formula helps stabilize dissolved minerals and metals, thereby reducing the risk of limescale, metal stains, and cloudiness.
Especially with hard or mineral-rich fill water, Rijo Defence is a useful addition to regular pH control, filtration, and disinfection.
