Calcium Reagent HI758 Filter Media This sensor can be used

This sensor can be used for constructing your own ATO (auto-top-off)

instructions

Add by hand or with automated dosing pumps

the WiFi Dongle can be easily relocated to the optimal location — perfect for retailers and canopy users

Move up to 4500 GPH with only 32 watts

Calcium Reagent HI758 Filter Media This sensor can be usedThe 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.