14 products

pH/EC/TDS Meters & Water Treatment

BlueLab Bluelab PPM Pen $94.00
BlueLab Bluelab pH Pen $112.50
Botanicare Botanicare pH Down From $11.95
General Hydroponics GH pH Control Kit $19.99
General Hydroponics GH pH Test Indicator Sol - 8oz $11.95
General Hydroponics GH pH Test Kit 1 oz (24/Cs) $7.54
General Hydroponics General Hydroponics pH Down, qt $12.95