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! Meters, Timers & Instruments ++ (692)
 » Calibration, Storage & Cleaning Solutions, pH Up & Down (205)
 » Instruments, Thermometers, Hygrometers & Light Meters (28)
 » pH, EC, PPM & TDS Testers (352)
 » Timers & Lighting Controllers (107)
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Manufacturers more
What's New? more
Sun Hut S Hook 23 mm/.90 in 5/Bag
706600
Sun Hut S Hook 23 mm/.90 in 5/Bag
$2.81
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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
dl-777163 16" Motorized Clear Top Bowl Trimmer
dl-777163
16" Motorized Clear Top Bowl Trimmer

$402.59
hf-OK3565301 pH 4.01 Sol
hf-OK3565301
pH 4.01 Sol

$34.46
hf-RW103703W Pargro QD 4x4x2.5" Wrapped
hf-RW103703W
Pargro QD 4x4x2.5" Wrapped

$105.14
742515 Hydro Flow Half Circle Mini Bubbler w/ 6in Stake Barbed Inlet  (Case of 100)
742515
Hydro Flow Half Circle Mini Bubbler w/ 6in Stake Barbed Inlet (Case of 100)

$70.00
718860 GROTEK® VITA MAX PLUS™ 1-1-2 - 4 LITER (4/CASE)
718860
GROTEK® VITA MAX PLUS™ 1-1-2 - 4 LITER (4/CASE)

$57.41
728740 Grower's Edge Dry Rack w/ 3in Zipper Opening (12/Cs)
728740
Grower's Edge Dry Rack w/ 3in Zipper Opening (12/Cs)

$35.32
dl-971204 Gro1 Carbon Filters - Standard-4 x 8 in.
dl-971204
Gro1 Carbon Filters - Standard-4 x 8 in.

$25.01
800520 A+GRADE 4.3" STAINLESS STEEL SICKLE - K206   PACKED - 12
800520
A+GRADE 4.3" STAINLESS STEEL SICKLE - K206 PACKED - 12

$44.64
hf-HGRES20PWC 20 Gal Premium White Reservoir Cover
hf-HGRES20PWC
20 Gal Premium White Reservoir Cover

$30.13
FA619 6" x 24" Phresh Pre-Filter
FA619
6" x 24" Phresh Pre-Filter

$11.29
732486 Bloombastic 80ml East Label (12/Cs)
732486
Bloombastic 80ml East Label (12/Cs)

$21.33
726715 ROOTECH CLONING GEL® -  8 OZ. (12/CASE)
726715
ROOTECH CLONING GEL® - 8 OZ. (12/CASE)

$39.05
HY613 Zone. 34 fl oz
HY613
Zone. 34 fl oz

$23.38
719875 HYGROCORP® NATURE'S NECTAR™ NITROGEN 5.0.0 - Organic - GALLON (4/CASE)
719875
HYGROCORP® NATURE'S NECTAR™ NITROGEN 5.0.0 - Organic - GALLON (4/CASE)

$34.89
702735 NG HOSE AND REGULATOR KIT
702735
NG HOSE AND REGULATOR KIT

$60.99
hf-MGSYSNM MegaGarden System No Media
hf-MGSYSNM
MegaGarden System No Media

$117.08
hf-PRPSSOL5 Plant Success Soluble 5 lb.
hf-PRPSSOL5
Plant Success Soluble 5 lb.

$256.20
hf-HOSHBGAL Sweet & Heavy 2-6-4 Bloom, 1 gal
hf-HOSHBGAL
Sweet & Heavy 2-6-4 Bloom, 1 gal

$26.34
hf-HGPIP Disposable Transfer Pipettes 3
hf-HGPIP
Disposable Transfer Pipettes 3

$2.21
400021 15 AMP - 240 VOLT WALL RECEPTACLE
400021
15 AMP - 240 VOLT WALL RECEPTACLE

$4.88
hf-ACPF25D5 Pre-Filter for AC25D5
hf-ACPF25D5
Pre-Filter for AC25D5

$3.62
hf-ACPF20D16 Pre-Filter for AC20D16
hf-ACPF20D16
Pre-Filter for AC20D16

$5.09
706594 Sun Hut Elastic Trellis 4 ft x 5 ft 1/Bag
706594
Sun Hut Elastic Trellis 4 ft x 5 ft 1/Bag

$9.38
716753 RAPITEST MINI PH TESTER (12/CASE)
716753
RAPITEST MINI PH TESTER (12/CASE)

$6.28
713088 BIG MAMA 8" x 8" x 8" (1EA=18 BLOCKS)
713088
BIG MAMA 8" x 8" x 8" (1EA=18 BLOCKS)

$135.76
FE106 Grow Big. 1 Gallon
FE106
Grow Big. 1 Gallon

$64.95
hf-XT49HV Xtrasun Parabolic 49" Reflector
hf-XT49HV
Xtrasun Parabolic 49" Reflector

$102.44
hf-ROSSBS5G Soul Synthetics Big Swell 5 Gal
hf-ROSSBS5G
Soul Synthetics Big Swell 5 Gal

$402.60
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Reviews more
PH600-AQ PH METER 10/CS
DO NOT BUY THIS! I don't usually write reviews calling an it ..
1 of 5 Stars!
BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate


PriceGrabber User Ratings for Horticulture Source
Specials more
INVENTORY BLOWOUT SALE
MANY ITEMS FAR BELOW COST - while quantities last

Vinyl Tubing. 1/4 in
Vinyl Tubing. 1/4 in
$0.19
$0.17
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
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
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)
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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