Filter All listing types All listing types Sell Auction Service Controllers & meters All categories Genetics Seeds Pollen Clones Tissue Cultures Spores Equipment Complete kits Ventilation / Climate Lights Propagation Irrigation system Tents & greenhouses Nutrients Soil & Media Pots & trays Controllers & meters Harvesting & processing Testing Packaging & conditioning Mycology supplies Accessories, tools, consumables Services Breeding Compliance Design & Construction Extraction Harvesting Propagation Price Min: Max: Condition New Refurbished Used Update view All categories Genetics Equipment Complete kits Ventilation / Climate Lights Propagation Irrigation system Tents & greenhouses Nutrients Soil & Media Pots & trays Controllers & meters Harvesting & processing Testing Packaging & conditioning Mycology supplies Accessories, tools, consumables Services Link4 iPonic D.I.S.M 50ft Extension Cable $82.49 / unit GrowersHouse C.A.P. HLC Advanced HID Lighting Controller $77.09 / unit GrowersHouse Bluelab PeriPod L3 $2,015.19 / unit GrowersHouse Bluelab pH Doser Controller Connect $548.35 / unit GrowersHouse Bluelab Guardian Monitor Connect In-Line $497.63 / unit GrowersHouse Bluelab pH Doser Controller $487.87 / unit GrowersHouse Hanna GroLine Hydroponic Nutrients Monitor for pH, EC, TDS, and Temperature $389 / unit GrowersHouse Bluelab Guardian Monitor Connect $382.48 / unit GrowersHouse Myron L Ultrapen PT2 pH & Temperature Pen $189.12 / unit GrowersHouse Hanna GroLine Replacement pH/EC/TDS Electrode for HI981420 $169 / unit GrowersHouse Bluelab pH + PPM Complete Starter Kit with Storage + Calibration Solution $156.41 / unit GrowersHouse Hanna Combo HI98129 pH/EC/TDS/Temperature Tester with Low Range EC $156.16 / unit GrowersHouse Hanna Instruments pH/EC/TDS Multiparameter Probe for use with HI9814 GroLine Combo Meter $149 / unit GrowersHouse Bluelab Commercial Truncheon - Nutrient Meter $119.27 / unit GrowersHouse Hanna GroLine Direct Soil EC Tester/Pen $119 / unit GrowersHouse Bluelab Original Truncheon Meter $116.93 / unit GrowersHouse Hanna pH Checker Complete Starter Kit with 4 + 7 Calibration Solution $65.56 / unit GrowersHouse Bluelab Replacement pH Probe $61.25 / unit GrowersHouse HM Digital Waterproof Combo Meter COM-100 $59.97 / unit GrowersHouse Hanna PHEP Tester (Model HI 98107) $46.64 / unit GrowersHouse Milwaukee pH Tester Model pH600 AQ $26.16 / unit GrowersHouse Bluelab Meter Carry Case $21.43 / unit GrowersHouse Bluelab Probe Care Kit pH + Conductivity $20.99 / unit GrowersHouse Hanna 1500PPM Calibration Solution $18.20 / unit GrowersHouse Hanna 1413 uS-CM Calibration Solution -- 16 oz $18.20 / unit GrowersHouse General Hydroponics Calibration pH 7.01 Calibration Solution -- 1 Quart $18.01 / unit GrowersHouse Hanna pH7 Calibration Solutions -- 16 oz $17.07 / unit GrowersHouse Hanna TDS 1382 Calibration 460 ml $16.88 / unit GrowersHouse pH Test Indicator Solution 1 oz $7.27 / unit GrowersHouse BlueLab Calibration Solution - 7.0 pH $7.21 / unit GrowersHouse ← Previous 1 2 3 4 5 6 7 Next →