Seachem Reef Kalkwasser 500g – Pure Calcium Hydroxide for Reef Aquariums Light Up to 20mm Glass Compatibility:

Up to 20mm Glass Compatibility: Can be installed in tanks with up to 20mm thick glass

Push notifications can be enabled for test results that are out of your set range

making it both cost-effective and reliable

With this reference solution

Seachem Reef Kalkwasser 500g – Pure Calcium Hydroxide for Reef Aquariums Light Up to 20mm Glass Compatibility:Seachem Reef Kalkwasser is a high purity calcium hydroxide designed to maintain natural seawater calcium levels in reef aquariums. When mixed with freshwater, it creates limewater (kalkwasser) that supplies calcium directly while supporting carbonate alkalinity indirectly through natural CO interaction. This proven supplementation method is ideal for reef systems with sufficient evaporation rates and helps promote strong coral skeletal growth, stable