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The HI758U Checker® HC (Handheld Colorimeter) provides a simple
accurate and cost-effective way to measure calcium
Due to its unique composition
Skimmer and filtration media tend to remove trace elements from the water of closed aquarium system
iron 46 mg/kg
TGR KALK (Kalkwasser Powder) coral frenzy The HI758U Checker® HC (HandheldPure USP Grade Calcium Hydroxide powder used to prepare kalkwasser solutions for marine aquarium system. Commonly used to maintain calcium and alkalinity and increase pH levels. Highly potent and recommended to be used in kalkwasser drippers or dosers. Economical way of dosing your reef tank. High purity USP grade from UK. Note: Must not be added directly in large amounts. Add to reach ideal water parameter only.