Calcium Reagent HI758 jawfish Natural Gyre

Natural Gyre

or simply connect it to a third party controller like an Apex

these freshwater Mysis shrimp (Mysis diluviana) are a nutritional powerhouse naturally gut-loaded with phytoplankton

Don't let this deter you from considering them though

Calcium Reagent HI758 jawfish Natural GyreThe HI758U Checker HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure calcium. Required for the development of calcium carbonate skeletons of coral reefs, calcium is a crucial component of marine waters. Designed as a more accurate alternative to chemical test kits, the HI758U provides quick, accurate results in a few easy steps.