Categories: All Ventilation Garden Hygiene & Safety Environmental Controllers Timers & Outlets CO2 & Accessories Air Pumps & Accessories Nectar For The Gods Grow Tents Propagation & Cloning Root Enhancer Filters / Ducting AC Infinity Products Hydroponics Tables / Trays /Stand Water Filtration & Accessories Soil / Growing Media / Fertilizer Rock / Pebble / Stone pH/EC/TDS Meters & Solutions Nutrients Beneficial Bacteria Supplements Soil Amendments All / BlueLab Replacement Probe ONLY $67.99 BlueLab Conductivity (PPM) Pen $90.45 BlueLab 2.77EC Conductivity Solutions - 500 ml $17.95 BlueLab pH 7.0 Calibration Solution - 500 ml $11.73 BlueLab pH Pen $98.99 Bluelab pH Probe KCI Storage Solutions - 100ml $12.58 General Hydroponics pH Up from $11.39 General Hydroponics pH Down from $11.39
