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and barium
they are a great food source for finicky fish and invertebrates
change one at a time every week until all bags have been replaced
The results will be displayed in ppm of CaCO3 for the HI755 Checker or in dKH for the HI772 Checker
Hanna Marine Calcium Colorimeter Checker® HI758 Feeding Accessories and bariumThe Hanna Marine Calcium Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine absorbance and ion concentration. Professional