Seachem Reef Kalkwasser 250g – Pure Calcium Hydroxide for Reef Aquariums pump 2x 410-420nm Violet

2x 410-420nm Violet

Compatibility: Upgrades G3/4 RMS Single Arm Kit for use with G5/G6 XR15w LED Lights

-Magnetic pump mounting bracket

Ultra-Flow weir comb increases water flow by 30-50%

Includes an optional fish guard for added protection

Seachem Reef Kalkwasser 250g – Pure Calcium Hydroxide for Reef Aquariums pump 2x 410-420nm VioletSeachem Reef Kalkwasser is an ultra pure calcium hydroxide powder designed to prepare limewater (kalkwasser) solutions for maintaining natural seawater calcium levels in reef aquariums. Known for its exceptional purity and solubility, Reef Kalkwasser delivers consistent calcium supplementation while indirectly supporting carbonate alkalinity. When used correctly, kalkwasser helps stabilize essential ionic balance in reef systems by replenishing