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Grodan Pro Delta 10 Block, 4″ x 4″ x 4″, case of 144, Commercial
$107.10
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Grodan Pro Delta 6.5 Block, 4″ x 4″ x 2.5″, case of 216, Commercial
$103.76
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Grodan Round Macro Plugs w/Slit, case of 2000
These rockwool plugs feature a slit for easy insertion of rooted cuttings. They fit perfectly into the hole of any ...
$282.36
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Grodan Uni-Block GR40, case of 36
Size: 8″ x 8″ x 4″, case of 36
$134.58
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Grodan UNI-SLAB, 9.5″ x 8″ x 4″, case of 16
$77.06
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GroStar EC Calibration Kit (2.77 EC, 8 oz. each)
GroStar by Apera EC Calibration Kit (2.77 EC, 8 oz. each) • 2.77 EC conductivity standard calibration solution• Used as a reference or ...
$10.37
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GroStar GS1 pH Pen
AI11010 - GroStar GS1 pH PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (probe)• pH 7 ...
$83.97
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GroStar GS1-E replacement pH electrode
AI58010 - GroStar GS1-E replacement pH electrode • Replacement GS1 probe measures pH and temperature• Premium probe technologies and materials ensure high accuracy ...
$35.29
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GroStar GS2 Soil pH Pen
AI31020 - GroStar GS2 Soil pH PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (probe)• pH ...
$177.87
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GroStar GS2-E replacement Soil Spear pH electrode
AI58020 - GroStar GS2-E replacement Soil Spear pH electrode • Spear pH Probe measures pH and temperature in nutrient solution, soil, coco ...
$125.96
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GroStar GS3 EC Pen
AI11030 - GroStar GS3 EC/PPM/Temp PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (probe)• 2.77 EC ...
$78.90
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GroStar GS3-E replacement EC electrode
AI58030 - GroStar GS3-E replacement EC electrode • Measures conductivity EC, PPM (500), PPM (700) and temperature• Premium probe technologies and materials ensure ...
$37.37
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GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen
AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year ...
$123.89
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GroStar GS4-E replacement pH/EC combo electrode
AI58040 - GroStar GS4-E replacement pH/EC combo electrode • Measures pH, conductivity (EC and PPM) and temperature• Combo probe built with lithium glass ...
$55.36
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GroStar pH calibration kit (pH 4/7, 8 oz. each)
GroStar by Apera pH calibration kit (pH 4/7, 8 oz. each) Kit includes: (1) 8 oz. pH 4.0 calibration solution (1) 8 ...
$13.14
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GroStar pH calibration kit (pH 4/7/10, 8 oz. each)
GroStar by Apera pH calibration kit (pH 4/7/10, 8 oz. each) Kit Includes: (1) pH 4.0 calibration solution 8 oz. (1) pH 7.0 ...
$20.06
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GroStar pH Probe Maintanence Kit
All-in-one maintanence kit provides everything you need to maintain, clean and store your GroStar pH probe Kit Includes: 3M KCL storage solution (4oz.) Cleaning solution ...
$16.60
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Grotek Blossom Blaster Pro Liquid, 1 L
Size: 1 L
$20.57
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Grotek Blossom Blaster Pro Liquid, 4 L
A high phosphorous formula that supports flower growth and key metabolic processes by enhancing the plants own systems. The nutrient ratios ...
$69.95
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Grotek Blossom Blaster, 130 g
Blossom Blaster™ provides available phosphorous to improve root development and aid in blooming and fruiting. Potassium is instrumental in moving ...
$49.82
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Grotek Blossom Blaster, 2.5 kg
Blossom Blaster™ provides available phosphorous to improve root development and aid in blooming and fruiting. Potassium is instrumental ...
$574.23
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Grotek Blossom Blaster, 20 g
Blossom Blaster™ provides available phosphorus to improve root development and aid in blooming and fruiting. Potassium is instrumental in moving ...
$8.33
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Grotek Blossom Blaster, 500 g
Blossom Blaster™ provides available phosphorous to improve root development and aid in blooming and fruiting. Potassium is instrumental in moving ...
$172.95
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Grotek Bud Fuel Pro, 1 L
Size: 1 L
$25.57
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Grotek Bud Fuel Pro, 4 L
A unique transitional product formulated to be used during the pre flowering and early flowering stages to improve overall flower ...
$69.28
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Grotek Cal-Max, 1 gal
During periods of high temperatures and accelerated growth, plants can develop nutrient deficiencies, which are preventable. Cal-Max™ was developed to ...
$31.95
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Grotek Cal-Max, 1 qt
During periods of high temperatures and accelerated growth, plants can develop nutrient deficiencies, which are preventable. Cal-Max™ was developed to ...
$10.74
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Grotek Cal-Max, 10 L
During periods of high temperatures and accelerated growth, plants can develop nutrient deficiencies, which are preventable. Cal-Max™ was developed to ...
$82.46