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you get an extra temperature port as well as six I/O switch inputs for use on ATO
RowaPhos is a unique and patented
Get alerts when those values are out of range
Maintain normal water flow using pumps and powerheads
evenly distributed flow
Hanna Marine Salinity Tester - HI98319 Filter Media you get an extra temperatureDesigned to bring simplicity to salinity testing during the any process, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are digitally displayed on the LCD. Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S. G.). Comes with all the necessary solutions and batteries everything you
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