15 products

pH/EC/TDS Meters & Water Treatment

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 Indicator Test Kit 1 oz (24/Cs) $7.54
General Hydroponics GH pH Test Indicator Sol - 8oz $11.95
General Hydroponics General Hydroponics pH Down $12.95