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GroStar GS2-E Replacement Soil Spear PH Electrode
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Hydroponics

GroStar GS2-E Replacement Soil Spear PH Electrode

Original price was: $181.99.Current price is: $98.99.
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GroStar GS3 EC Pen
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Hydroponics

GroStar GS3 EC Pen

Original price was: $113.99.Current price is: $79.79.
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GroStar GS3-E Replacement EC Electrode
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Hydroponics

GroStar GS3-E Replacement EC Electrode

Original price was: $53.99.Current price is: $37.79.
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GroStar GS4-E Replacement PH/EC Combo Electrode
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Hydroponics

GroStar GS4-E Replacement PH/EC Combo Electrode

Original price was: $79.99.Current price is: $55.99.
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GroStar PH Calibration Kit (pH 4/7, 8 Oz. Each)
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GroStar PH Calibration Kit (pH 4/7, 8 Oz. Each)

Original price was: $18.99.Current price is: $13.29.
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GroStar PH Probe Maintanence Kit
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GroStar PH Probe Maintanence Kit

Original price was: $23.99.Current price is: $16.79.
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GrowLab®
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GrowLab®

Original price was: $137.15.Current price is: $99.99.
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Hanna 12880 μS/cm Conductivity Solution, 230 Ml
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Hydroponics

Hanna 12880 μS/cm Conductivity Solution, 230 Ml

Original price was: $16.99.Current price is: $11.89.
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Hanna 1382 Ppm@25C Calibration Solution, 20 Ml, Case Of 25
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Hydroponics

Hanna 1382 Ppm@25C Calibration Solution, 20 Ml, Case Of 25

Original price was: $36.99.Current price is: $25.89.
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Hanna 1413 μS/cm (EC) Calibration Solution, 20 Ml, Case Of 25
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Hydroponics

Hanna 1413 μS/cm (EC) Calibration Solution, 20 Ml, Case Of 25

Original price was: $36.99.Current price is: $25.89.
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Hanna 1413 μS/cm Solution, 230 Ml
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Hydroponics

Hanna 1413 μS/cm Solution, 230 Ml

Original price was: $16.99.Current price is: $11.89.
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Hanna 1500 Ppm Solution, 230 Ml
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Hydroponics

Hanna 1500 Ppm Solution, 230 Ml

Original price was: $15.99.Current price is: $11.19.