It is tastefully designed by HYDOR with excellent effect. It is useful to keep the calcium levels in the water appropriate. They are very silent and thanks to the cap on the bottom part it is very easy to fill with material. They can be placed inside or outside the SUMP and can be joined to the majority of Co2 systems.
Height 60cm / tube thickness 12cm diameter / space for materials 5.6L.
Suitable for aquarium: 750 litres / seltz L30 1200L/H pump
