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! Meters, Timers & Instruments ++ (695)
 » Calibration, Storage & Cleaning Solutions, pH Up & Down (206)
 » Instruments, Thermometers, Hygrometers & Light Meters (28)
 » pH, EC, PPM & TDS Testers (354)
 » Timers & Lighting Controllers (107)
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Manufacturers more
What's New? more
Final Flush Strawberry, 1 L
hf-GTFFS1L
Final Flush Strawberry, 1 L
$10.24
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What do we have here?
Meters, Timers & Instruments: pH, EC & TDS Meters & Test Kits for Water & Soil, Timers, Instruments & Calibration Solutions

What do we have here?
Calibration, Storage & Cleaning Solutions, pH Up & Down
Calibration, Storage & Cleaning Solutions, pH Up & Down
Instruments, Thermometers, Hygrometers & Light Meters
Instruments, Thermometers, Hygrometers & Light Meters
pH, EC, PPM & TDS Meters, Monitors, 
Testers, Pens & Test Kits for Water & Soil
pH, EC, PPM & TDS Meters, Monitors, Testers, Pens & Test Kits for Water & Soil
Timers & Lighting Controllers
Timers & Lighting Controllers

New Products For July
hf-RW101702 Pargro QD 6x40" Slab
hf-RW101702
Pargro QD 6x40" Slab

$55.61
hf-HNDD405 DeuceDeuce 32 oz.
hf-HNDD405
DeuceDeuce 32 oz.

$14.30
hf-HNF404 FlavorFul 16 oz.
hf-HNF404
FlavorFul 16 oz.

$7.86
902545 Lumatek Dual 600/400 Watt 240 Volt Electronic Ballast
902545
Lumatek Dual 600/400 Watt 240 Volt Electronic Ballast

$285.00
780005 Power All Commercial Grade 125 Volt 10ft Cord -16 Gauge 13 Amp Black w/ Circuit Breaker
780005
Power All Commercial Grade 125 Volt 10ft Cord -16 Gauge 13 Amp Black w/ Circuit Breaker

$9.00
hf-NN600D NANOLUX 600W Dimmable Ballast
hf-NN600D
NANOLUX 600W Dimmable Ballast

$162.21
FL122 50/100/150w Incandescent Bulb.
FL122
50/100/150w Incandescent Bulb.

$20.36
hf-BUHL400UV 400W Halide Universal Bulb
hf-BUHL400UV
400W Halide Universal Bulb

$14.97
hf-HOEB35023 Elements Bloom Gal 0-0-16
hf-HOEB35023
Elements Bloom Gal 0-0-16

$50.17
dl-XNHPHDOWN-1QT X Nutrients pH Down (1 Quart)
dl-XNHPHDOWN-1QT
X Nutrients pH Down (1 Quart)

$6.88
904483 Sun Shield for Blazer 6in
904483
Sun Shield for Blazer 6in

$23.75
716615 MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)
716615
MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)

$187.44

WG235
ZEN TEK Ergonomic, Top Quality Welding Goggles, meet ANSIZ287.1 standards. Round Lens

$4.69
hf-RXAX1005 Rx Green Solutions  AXIOM Growth Stimulator, 0.5 g
hf-RXAX1005
Rx Green Solutions AXIOM Growth Stimulator, 0.5 g

$7.46
hf-STGI9 Squall 4.75x6"
hf-STGI9
Squall 4.75x6"

$258.71
708280 DRIPPER STAKES W/ 1/8" LINE (BAG of 100)
708280
DRIPPER STAKES W/ 1/8" LINE (BAG of 100)

$56.00
LPG600 ZEN-TEK INSTRUMENTS 0-600 PSI Liquid Pressure Gauge
LPG600
ZEN-TEK INSTRUMENTS 0-600 PSI Liquid Pressure Gauge

$9.94
MI193 The Precipitator 360™ sprayer
MI193
The Precipitator 360™ sprayer

$4.29
726665 EZ-CLONE™ ROOTING COMPOUND - 4 OZ (12/CASE)
726665
EZ-CLONE™ ROOTING COMPOUND - 4 OZ (12/CASE)

$16.60
hf-ELIMCF110 Eliminator Replacement Carbon Block Filter
hf-ELIMCF110
Eliminator Replacement Carbon Block Filter

$12.71
hf-HGFT44COV White Flood Table Cover, 4' x 4'
hf-HGFT44COV
White Flood Table Cover, 4' x 4'

$109.46
dl-817706 Bug Net 6"
dl-817706
Bug Net 6"

$3.06
hf-HI981408 GroChek pH Tester
hf-HI981408
GroChek pH Tester

$85.46
701243 Phresh Intake Pre-Filter 8in x 12in
701243
Phresh Intake Pre-Filter 8in x 12in

$3.50
eco-3971 400 W SunPulse Metal Halide 4K
eco-3971
400 W SunPulse Metal Halide 4K

$82.00
706855 GROWLAB 290 GL290 9'6" x 9'6" x 6'7"
706855
GROWLAB 290 GL290 9'6" x 9'6" x 6'7"

$549.95
IN103 Nuke Em 1 gallon
IN103
Nuke Em 1 gallon

$165.89
EL406 1000w Metal Halide Ballast Kit (by Sunmaster)
EL406
1000w Metal Halide Ballast Kit (by Sunmaster)

$161.95
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Reviews more
Quick Stake Plant Support - Pack of 2
I have been looking for a product for a long time now that c ..
5 of 5 Stars!
BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate


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Specials more
INVENTORY BLOWOUT SALE
MANY ITEMS FAR BELOW COST - while quantities last

GROW BAGS 10 GALLON 0.075MM (25/BOX) AVAILABLE IN CASE QUANTITIES ONLY
GROW BAGS 10 GALLON 0.075MM (25/BOX) AVAILABLE IN CASE QUANTITIES ONLY
$12.50
$11.25
Most Viewed in pH, EC & TDS Meters & Test Kits for Water & Soil, Timers, Instruments & Calibration Solutions
CW 24-7 NUTRIENT MONITOR PPM/pH/TEMPERATURE
CW 24-7 NUTRIENT MONITOR PPM/pH/TEMPERATURE
Grower's Edge Large Display Thermometer / Hygrometer (20/Cs)
Grower's Edge Large Display Thermometer / Hygrometer (20/Cs)
RAPITEST 4 WAY ANALYZER FERTILIZER/LIGHT/MOISTURE/pH MODEL 1880
RAPITEST 4 WAY ANALYZER FERTILIZER/LIGHT/MOISTURE/pH MODEL 1880
TITAN CONTROLS® APOLLO 9™ TWO OUTLET 24 HOUR DIGITAL TIMER WITH 15 MINUTE INTERVALS (10/CASE)
TITAN CONTROLS® APOLLO 9™ TWO OUTLET 24 HOUR DIGITAL TIMER WITH 15 MINUTE INTERVALS (10/CASE)
BLUELAB COMBINATION METER MEASURES pH, NUTRIENTS AND TEMPERATURE
BLUELAB COMBINATION METER MEASURES pH, NUTRIENTS AND TEMPERATURE
pH CONTROL KIT (12/CASE)
pH CONTROL KIT (12/CASE)
CW SOIL, pH AND MOISTURE MONITOR
CW SOIL, pH AND MOISTURE MONITOR
RAPITEST SOIL pH METER
RAPITEST SOIL pH METER
MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)
MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)
High/Low Thermometer.
High/Low Thermometer.
RAPITEST SOIL TEST pH NPK
RAPITEST SOIL TEST pH NPK
Control Wizard Accurate pH 8
Control Wizard Accurate pH 8
INTERMATIC TN311-C HEAVY DUTY TIMER 15AMP
INTERMATIC TN311-C HEAVY DUTY TIMER 15AMP
TITAN CONTROLS® APOLLO 8™ TWO OUTLET 24 HOUR ANALOG TIMER WITH 15 MINUTE INTERVALS (10/CASE)
TITAN CONTROLS® APOLLO 8™ TWO OUTLET 24 HOUR ANALOG TIMER WITH 15 MINUTE INTERVALS (10/CASE)
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
pH DOWN QUART (12/CASE)
pH DOWN QUART (12/CASE)
HANNA WATERPROOF PH/EC/TDS/TEMP (HI98129)
HANNA WATERPROOF PH/EC/TDS/TEMP (HI98129)
CW 1382 CALIBRATION SOLUTION 4 OZ (12/CASE)
CW 1382 CALIBRATION SOLUTION 4 OZ (12/CASE)
PH600-AQ PH METER 10/CS
PH600-AQ PH METER 10/CS
BLUELAB GUARDIAN MONITOR
BLUELAB GUARDIAN MONITOR
Bestsellers
01.RAPITEST SOIL TEST pH NPK
02.Grower's Edge Large Display Thermometer / Hygrometer (20/Cs)
03.TITAN CONTROLS® APOLLO 9™ TWO OUTLET 24 HOUR DIGITAL TIMER WITH 15 MINUTE INTERVALS (10/CASE)
04.TITAN CONTROLS® APOLLO 8™ TWO OUTLET 24 HOUR ANALOG TIMER WITH 15 MINUTE INTERVALS (10/CASE)
05.CW 1382 CALIBRATION SOLUTION 4 OZ (12/CASE)
06.pH CONTROL KIT (12/CASE)
07.High/Low Thermometer.
08.CT-1 Short Cycle Timer (10/Cs)
09.pH UP QUART (12/CASE)
10.pH DOWN QUART (12/CASE)
11.Control Wizard Accurate pH 8
12.pH 7.0 CAL SOLUTION 8OZ (12/CASE)
13.CW 24-7 NUTRIENT MONITOR PPM/pH/TEMPERATURE
14.HANNA WATERPROOF PH/EC/TDS/TEMP (HI98129)
15.GH pH Down Dry 2.2lb (12/Cs)
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