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TDS, EC, & PPM Meters

COM-80S Hydrotester
C$54.99
HM Digital - COM-80S Hydrotester available at Valley Indoor.
HydroMaster HM-500 Continuous pH/EC/TDS/Temp Monitor
C$479.99
HM Digital - HydroMaster HM-500 Continuous pH/EC/TDS/Temp Monitor available at Valley Indoor.
Truncheon Nutrient Meter
C$209.95
Bluelab - Truncheon Nutrient Meter available at Valley Indoor.
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