pH, EC & TDS
Showing 1–16 of 272 results
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HM Digital Replacement pH Sensor Probe for HM-500
Sale!$59.99$39.59
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GH pH Down Liquid Gallon
Sale!$29.24$17.67
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Bluelab Guardian Monitor Power Supply w/international adapters
Sale!$27.00$18.15
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HM Digital Hydromaster Replacement EC/TDS Probe
Sale!$49.99$32.99
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Bluelab Soil pH Pen
Sale!$185.00$123.20
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GH pH Up Liquid Gallon
Sale!$29.24$17.67
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Bluelab Inline pH Probe (Replacement Probe Guardian Monitor Connect In-Line)
Sale!$180.00$118.80
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Bluelab pH 7.0 Calibration Solution 500ml
Sale!$11.10$7.53
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Bluelab pH 4.0 Calibration Solution 500ml
Sale!$11.10$7.53
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Bluelab Soil pH Pen
Sale!$185.00$123.20
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GH pH Down Liquid Quart
Sale!$11.73$7.08
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Bluelab Replacement pH Probe
Sale!$72.00$47.85
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Future Harvest Grow Boss – Nutrient Monitor
Sale!$309.95$150.43
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Active Air 2-Way Moisture/pH Meter
Sale!$10.29$5.67
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Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter
Sale!$72.00$47.85
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GH pH Up Liquid Quart
Sale!$11.73$7.08
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Showing 1–16 of 272 results