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Meters & Controllers

Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
In Stock: 82
$90.26 $95.00 -5%
Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable
Out of stock
$630.11 $814.77 -23%
Hydrofarm Electronic Water Timer
In Stock: 1131
$26.26 $31.49 -17%
GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
In Stock: 29
$24.17 $28.99 -17%
GroStar GS1-E replacement pH electrode
In Stock: 78
$42.52 $50.99 -17%
Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml
In Stock: 83
$13.21 $13.90 -5%
Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature
Out of stock
$1,475.99 $1,812.17 -19%
Milwaukee Instruments pH 7.01 Solution, 230 ml
In Stock: 185
$13.21 $13.90 -5%
Dilution Solutions PH Calibration Solution | 20pcs
In Stock: 99
$24.85 $24.95
Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes
In Stock: 65
$37.12 $45.51 -18%
Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in
Out of stock
$38.61 $39.95 -3%
HM Digital Hydromaster Replacement EC/TDS Probe
Out of stock
$41.69 $49.99 -17%
GroStar GS3-E replacement EC electrode
In Stock: 100
$45.02 $53.99 -17%
Plastair Wrox Color Change Moisture Indicator | 3pc
Out of stock
$83.04 / $6.92 per unit
(minimum purchase of 12)
Hanna Electrode Storage Solution
In Stock: 3
$34.24 $34.99 -2%
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
In Stock: 16
$35.82 $42.95 -17%
Hydrofarm Active Air 3-Way Meter
In Stock: 51
$11.59 $14.99 -23%
1" Digital Flow Meter
In Stock: 3
$97.26 $103.95 -6%
GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
In Stock: 102
$12.50 $14.99 -17%
Hanna 7.01 pH Buffer Solution | 500ml
In Stock: 7
$27.39 $27.99 -2%
HM Digital PH-STOR pH Electrode Storage Solution
In Stock: 41
$7.08 $8.49 -17%
Hanna General-Purpose Cleaning Solution | 230ml
In Stock: 4
$26.02 $26.59 -2%
Dilution Solutions PH Storage Solution | 60cc
Out of stock
$7.93 $7.95
Hanna 4.01 pH Buffer Solution | 500ml
In Stock: 10
$27.39 $27.99 -2%
Dilution Solutions HM Digital Meter | 7.3in x 1.3in x 1.3in
Out of stock
$74.61 $74.95
1.5" Digital Flow Meter
In Stock: 9
$108.22 $115.50 -6%
1.25" Digital Flow Meter
In Stock: 8
$102.74 $110.25 -7%
Water Content Sensor with Cable Set
In Stock: 31
$221.93 $241.50 -8%
2-in-1 EC + Temp Sensor for Reservoir
In Stock: 3
$93.15 $100.28 -7%
Aqua-X Plus Controller with AMP-3 Sensor Board,Free App
In Stock: 3
$1,278.20
Aqua-X Pro Controller with AMP-3 Sensor Board,Free App
Out of stock
$2,537.23 $2,623.95 -3%
Aqua-X Controller with Water Detector set, Free App
In Stock: 41
$335.64 $348.60 -4%
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