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Watering, Sprayers and Wands
Growing Environment
Environmental Controllers
Fans, Ventilation and Ducting
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Air Purification
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Commercial Lighting Fixtures
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LEC/CMH Lighting
LED
Kind Lighting
Sun System DE Reflectors
Sun System SE Reflectors
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Electronic Ballasts
Sun System Magnetic Ballasts
Magnetic Ballasts
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Fluorescent Lighting
Complete Systems
Lighting & Electrical Components
Extension, Power & Lamp Cords
Light Movers Hangers
Plant Propagation Nutrition and Health
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Emerald Harvest
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Nectar for the Gods
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House and Garden
Lotus
Cyco
Super Thrive
Terpinator
Hygrozyme
Budswel
Advanced Nutients
Humboldt County's Own
Monterey Epsom Salts
General Organics
Measure Master
Down to Earth
Xtreme Gardening
Cloning and Seed Starting
Clonex
Rootech
Rapid Start
EZ Clone
Hygrozyme
House and Garden
Botanicare
General Hydroponics
Technaflora
Super Sprouter
Cyco
Root Riot
Mondi
Leaf Shines and Washes
Pest and Disease Control
Insecticides and Fungicides
Growing Media and Containers
Growing Media
Pots and Containers
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Tents / Indoor Greenhouses
Grow System/ Trays/ Reservoirs
Tools, Accessories and More
Plant Support
Hand Tools
Growing accessories
Growvision
Leaktite
Food and Water Storage
Boveda
Liquid and Weight Measuring
Reflective & Greenhouse Films
Harvest Solutions
Garden Hygiene and Safety
Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficient and accurate due to its advanced microprocessor technology. It features a measurement range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments
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HM Digital HM Digital TDS-3 Handheld TDS meter
$33.99
HM Digital™ pH/TDS/EC/Temp Meter Model COM-300
The COM-300 is an advanced waterproof combo meter with superior accuracy. The meter measures four parameters: pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature. Features includ
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HM Digital HM Digital pH / TDS / EC / Temp meter
$172.94
GH pH 4.01 Calibration Solution Quart
General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check e
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General Hydroponics GH pH 4.01 Calibration Solution Quart
$25.75
GH pH 4.01 Calibration Solution 8 oz
General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check ea
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General Hydroponics GH pH 4.01 Calibration Solution 8 oz
$9.03
ONE-POINT RESOLUTION AND MANUAL CALIBRATION.
Milwaukee MW100 PRO pH meter is for users demanding fast, reliable results without the need for extra resolution or automatic calibration.
DESCRIPTION
The Milwaukee MW100 PRO pH meter features manual calib
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Milwaukee Instruments Milwaukee MW100 PRO pH Meter
$112.20
The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH probe
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BlueLab Bluelab pH Probe KCl Storage Solution 120 ml
$14.70
LAB GRADE. HIGH PERFORMANCE. AUTOMATED. TOUGH.
The Milwaukee MW102 PRO+ pH meter has won fans around the world with its reliable, fast and simple operation as well as its toughness. Accurate to ± 0.02 pH with automatic temperature compensation. Ideal for
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Milwaukee Instruments Milwaukee MW102 PRO+ 2-in-1 pH and Temperature Meter with ATC
$138.60
DIGITAL. SIMPLE. COMPACT.
The Milwaukee CD600 Total Dissolved Solids (TDS) Pen is designed for hydroponics, aquariums, horticulture, water conditioning and many other applications. The CD600 helps you make sure that your plants are receiving the right am
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Milwaukee Instruments Milwaukee CD600 Digital Total Dissolved Solids Pen (TDS)
$28.95
Bluelab Carry Case
The Bluelab Carry Case provides a custom fit so you can use and read your Bluelab Meter right from the carry case. A firm outer casing offers impact reduction for your Meter. There are two pockets in the top of the case especially ma
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BlueLab Bluelab Carry Case
$29.00
Bluelab Probe Care Kit - pH
Everything you need to clean, hydrate and calibrate pH probes. Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe. The probe surface is wh
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BlueLab Bluelab Probe Care Kit - pH
$22.00
Bluelab® Combo Meter
The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your crop
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BlueLab Bluelab Combo Meter
$329.00
Bluelab 2.77EC Conductivity Solution 500 ml
"The 2.77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solution should be stored in a cool place out of direct sun and heat. Plea
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BlueLab Bluelab 2.77EC Conductivity Solution 500 ml
$18.90
Bluelab pH Probe KCl Storage Solution 100 ml
The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and
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BlueLab Bluelab pH Probe KCl Storage Solution 100 ml
$12.58
Bluelab pH Probe KCI Storage Solution 250ml
The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and m
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BlueLab Bluelab pH Probe KCI Storage Solution 250ml
$24.50
Bluelab pH 7.0 Calibration Solution 250 ml
"pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibratio
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BlueLab Bluelab pH 7.0 Calibration Solution 250 ml
$12.00
Emerald Harvest pH Up 6 Gallon/22.71 Liter
Keep your nutrient solution in the sweet spot with Emerald Harvest® pH Up. A pH reading below 5.5 is considered too acidic for most hydroponic gardens. This premium pH alkalizer allows you to raise the pH of
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Emerald Harvest Emerald Harvest pH Up 6 Gallon/22.71 Liter
$352.66
Emerald Harvest pH Down Quart/0.95 Liter
Keep your nutrient solution in the sweet spot with Emerald Harvest® pH Down. A pH reading above 6.5 is considered too alkaline for most hydroponic gardens. This premium pH acidifier allows you to reduce the pH
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Emerald Harvest Emerald Harvest pH Down Quart/0.95 Liter
$26.68
Alchemist pH Down Non-Corrosive Gallon
Alchemist pH Down is comprised of very pure, food-safe ingredients. This unique buffer is non-toxic, non-corrosive and non-hazardous, making it like no other pH buffer on the market. Alchemist pH Down Non-Corrosi
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Alchemist Alchemist pH Down Non-Corrosive Gallon
$37.00
Bluelab® ppm Pen — Now Bluelab® Conductivity Pen
Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully
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BlueLab Bluelab Conductivity Pen
$99.00
GH pH Down Liquid Quart
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
General Hydroponics GH pH Down Liquid Quart
$13.70
General Hydroponics® pH Control Kit
General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.
General Hydroponics GH pH Control Kit
$22.98
The Milwaukee Waterproof pH55 PRO pH/Temp. Tester is one of our most accurate cost effective, well rounded, rugged and reliable testers in the market featuring dual level LCD readouts, easily replaceable probe and extended pH ranges to meet almost any app
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Milwaukee Instruments Milwaukee PH55 PRO Waterproof pH & Temperature Tester with ATC & Replaceable Probe
$55.00
The Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH/EC/TDS/Temp Tester is designed as an all-in-one solution for growers.
The Milwaukee MW803 MAX Waterproof 4-in-1 Tester offers:
ACCURACY
The MW803 MAX 4-in-1 tester is accurate to ±0.05 pH, EC/T
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Milwaukee Instruments Milwaukee MW803 MAX Waterproof Low Range 4-in-1 pH / EC / TDS/Temp Tester with Replaceable Probe
$156.20
The Milwaukee EC/TDS Nutrient Meter is designed for Hydroponics, horticulture and agriculture to help you make sure that your vegetables and plants are receiving the right amount of nutrient to promote healthy growth with low to zero product waste. Keep E
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Milwaukee Instruments Milwaukee EC40 EC/TDS Nutrient Meter
$90.20
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