Heavy-Duty Intank EC/Temp Sensor (PCT-2) A (dry scroll) vacuum is

A (dry scroll) vacuum is neccesary and not included

Vigorously mix until all granules are solubilized

No maintenance

so multiple HVAC systems can be controlled by a single Hydro-X system

The TSS-2 Extension Cable is simply a 16 ft extension cable to use with the WD-1 water detectors

Heavy-Duty Intank EC/Temp Sensor (PCT-2) A (dry scroll) vacuum isThe TrolMaster EC & Temperature probes provide accurate and reliable monitoring on the EC and temperature of the water being monitored by the Aqua x. The PCT 2 probe is a commercially rated probe and it connects to the Aqua x via the AMP 2. It is intended to be placed into a water tank.