Kalkwasser is the original marine calcium supplement/alkalinity buffer and nothing has proven better for promoting beautiful coralline algae growth. Kalkwasser also binds phosphates, an attribute no other calcium addition can boast. The Kalkwasserreactor greatly reduces the mess and hassle of using kalkwasser. Coupled with an automatic top-off system, like our Niveaumat, fresh water is pulled through the reactor “on-demand” to compensate for evaporation in your system. The incoming fresh water is pump-mixed in the reactor with the cached supply of undissolved Kalkwasserpowder. The micron-filtered mixing action ensures a steady supply of clear, saturated kalkwasser solution, to be fed slowly to the system via a top up system such as the Niveaumat. Filling is easy with a capped port atop the unit through which a re-fill of Kalkwasserpowder slurry can simply be poured. With the robust and convenient drain valve, nested below the settling cone, flushing the unit of precipitate between fillings is easy and mess-free. KR-1000 Specifications: - Recommended for tanks up to 500 gal. - Dimensions: 7" x 7" x 22"