PH, EC, TDS Meters and Solutions

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HM Digital Replacement TDS/EC sensor for HM-500

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Now: $44.95
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HM Digital Replacement TDS/EC sensor for HM-200

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Now: $44.95
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X Nutrients pH Up 2.5 Gallon

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Now: $59.00
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HM Digital Replacement Probe COM-300

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Now: $62.95
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HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)

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GroStar EC Calibration Kit (2.77 EC, 8 oz. each)

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Now: $14.99
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Biobizz Bio-pH+, 1 L

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Now: $29.99
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Active Air 2-Way Moisture/pH Meter

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Aqua Master Tools C800 Pre Controller Inline

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Was: $1,049.95

Now: $839.96
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Aqua Master Tools P110 Pro 2 Electrode

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Now: $54.95
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Aqua Master Tools P160 Pro Electrode

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Now: $49.95
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Aqua Master Tools P110 Pro Electrode

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Aqua Master Tools Calibration Solution pH 4.01 20ml Sachet

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Now: $50.00
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Aqua Master Tools Calibration Solution pH 7.00 20ml Sachet

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Aqua Master Tools Calibration Solution EC 1413 20ml Sachet

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Now: $50.00
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Aqua Master Tools C800 Pro pH/EC Controller

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Was: $799.95

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Aqua Master Tools C30 Peristaltic Pump Unit (Triple)

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Was: $769.95

Now: $568.69
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Aqua Master Tools C20 Peristaltic Pump Unit (Double)

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Was: $539.95

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Aqua Master Tools H600 Pro Handheld Substrate Meter

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Was: $354.95

Now: $272.06
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Aqua Master Tools P700 Pro 2 Combo Meter

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Was: $289.95

Now: $216.31

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