ScaleArmor ROCK limescale filter refill protects pipes and appliances from limescale for up to 2 years. Up to 2,270 L/h, certified according to the seller (IAPMO Z601).

Certified protection against limescale for larger homes and buildings
The ScaleArmor ROCK limescale filter refill is the original replacement fill for Atlas Filtri systems. According to the seller it prevents up to 86% of limescale, works for up to 2 years and allows a flow of up to 2,270 L/h. It is designed for large homes, apartments and commercial buildings, including catering, where flow requirements are higher.
The ScaleArmor medium slows the growth of calcium and magnesium crystals, so that they do not build up in pipes, boilers, heaters and washing machines. Price: €231.80.
How does it work: without salt, chemicals or electricity
The system does not soften water. It works without salt, chemicals or electricity and requires no regeneration or maintenance. The water hardness stays the same, but the effects of limescale are reduced, and because of fewer deposits, according to the seller, the energy consumption of boilers also drops.
The seller stresses that to keep the certified performance you should use only the original ScaleArmor ROCK refill. The cartridge housing is reusable, and the powder comes in a dosing container that you can recycle. You will find the whole system on the page for the ScaleArmor ROCK BIG BLUE 1″ limescale filter.
Which refill to choose: ROCK or POP
ROCK is designed for larger needs, whereas the ScaleArmor POP refill is a cheaper choice with a smaller flow and protection for up to 12 months. The maximum water hardness for both is 50 °f (500 ppm), and the water temperature 4 to 45 °C.
When to replace it
According to the seller the refill protects for up to 2 years (24 months), after which you should replace it. The package contains 1 ROCK refill cartridge. The exact capacity in litres is not stated on the page.
If you are looking for a ScaleArmor ROCK limescale filter refill for certified protection against limescale for up to 2 years, this is the original replacement fill for Atlas Filtri systems. Also see our other individual cartridges for water filters.