pH, EC & TDS
Showing 1–16 of 332 results
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HM Digital Replacement pH Sensor Probe for HM-500
Sale!$59.99$38.51
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GH pH Down Liquid Gallon
Sale!$28.39$16.68
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HM Digital Hydromaster Replacement EC/TDS Probe
Sale!$49.99$32.09
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Bluelab Guardian Monitor Power Supply w/international adapters
Sale!$27.00$17.66
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Bluelab Soil pH Pen
Sale!$185.00$119.84
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Hanna Checker pH Tester with 0.1 pH Resolution
Sale!$41.99$26.95
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Bluelab Replacement pH Probe
Sale!$72.00$46.55
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Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter
Sale!$72.00$46.55
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Active Air 2-Way Moisture/pH Meter
Sale!$9.99$5.89
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Mad Farmer pH Control Kit
Sale!$16.99$10.00
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Bluelab Temperature Probe
Sale!$40.00$26.40
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Bluelab pH 7.0 Calibration Solution 500 ml (6/Cs)
Sale!$66.60$47.06
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Rapitest Digital Soil pH Meter
Sale!$16.29$10.81
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Bluelab pH Controller Power Supply
Sale!$35.00$26.64
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Bluelab Guardian Monitor Power Supply
Sale!$27.00$17.66
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Future Harvest Grow Boss – Nutrient Monitor
Sale!$309.95$150.43
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Showing 1–16 of 332 results