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Meters & Controllers

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Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible
In stock
$196.83 $219.45 -10%
Save 5%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
In stock
$188.14 $199.00 -5%
Bluelab Soil pH Pen
In stock
$182.88
Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter
In stock
$182.88
Save 11%
Inline pH Sensor, Heavy Duty
In stock
$175.55 $197.40 -11%
Bluelab Multimedia pH Meter | 6.5ft Probe Cable
In stock
$156.67 $255.74 -39%
Save 17%
GroStar GS2-E replacement Soil Spear pH electrode
In stock
$150.68 $181.99 -17%
Save 17%
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
In stock
$148.20 $178.99 -17%
Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM
In stock
$135.63
Hanna GroLine Waterproof Hydroponic pH Tester
Out of stock
$132.99
Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick
In stock
$130.82 $202.71 -35%
Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters
In stock
$126.88
Bluelab Connect Stick 2 | for Bluelab Connect Devices
In stock
$112.75 $147.11 -23%
Bluelab pH Pen Meter | Measures pH and Temperature
In stock
$109.38
Save 9%
1.5" Digital Flow Meter
In stock
$105.06 $115.50 -9%
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1.25" Digital Flow Meter
In stock
$99.74 $110.25 -10%
Save 15%
GroStar GS1 pH Pen
In stock
$98.27 $115.99 -15%
Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L
In stock
$94.43 $128.70 -27%
Save 9%
1" Digital Flow Meter
In stock
$94.42 $103.95 -9%
Save 17%
GroStar GS3 EC Pen
In stock
$94.38 $113.99 -17%
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