pH Testing & Control - Page 4 - Blowout Sale! Save up to 58%


Blowout Sale! Up to 58% off on pH Testing & Control at Grow Website, Page 4. Top brands include GuDoQi, Justdolife, Bluelab, General Hydroponics, Safer Gro, Garden & Lawn Supply, Hanna Instruments, Digital Water Quality Tester, MChoice, mooncity, Earth Juice, & Homebox. Hurry! Limited time offers. Offers valid only while supplies last.



GuDoQi Digital Ph Meter Tester Digital Acidity Meter Backlight Ph Tester Best For Water Aquarium Pool Hot Tub Hydroponics Wine Resolution 0.01 Large Lcd Display (Yellow)
GuDoQi Digital Ph Meter Tester Digital Acidity Meter Backlight Ph Tester Best For Water Aquarium Pool Hot Tub Hydroponics Wine Resolution 0.01 Large Lcd Display (Yellow)
By GuDoQi
In Stock
$13.99

mpn: CE1325, ean: 0711531598620,

4.3 out of 5 stars with 24 reviews
Features: Full measurement range: PH 0-14, 0.05 PH range of error and 0.01 PH resolutions; quickly display readings in seconds Large and clear LCD display Compact and portable: Handheld pen-like design with a pen type clip which will keep it securely fastened to lab coats etc. a case is included for easy storage No calibration needed for new units, just remember to keep the probes neutral by cleaning with distilled water before and after use, and not touching them A little tool for home and


Justdolife PH Meter Water Quality Tester Portable Digital LCD Display PH Tester for Water Aquariums Pools
Justdolife PH Meter Water Quality Tester Portable Digital LCD Display PH Tester for Water Aquariums Pools
By Justdolife
In Stock
$11.98

mpn: MD93412918CKH, ean: 0192684167206,

4.6 out of 5 stars with 84 reviews
Description:Electrode: Vitreous vesiclesAccuracy: 0.01Resolving Power: 0.01Working Temperature: 0-80°CTesting Range: 0.00-14.00Color: YellowMaterial: Plastic + ElectronicsSize: L*W*H: 2.9*1.6*15.5cm(1.14*0.63*6.10in)Battery: 2 x 1.5V battery(not included)Note:- The batteries are not included.- Please refer to the measurement. Tiny measuring error is allowable in normal range.- There might be a little color difference due to the monitor, camera or other factors, please refer to the


Bluelab Guardian Monitor Connect In-Line
Bluelab Guardian Monitor Connect In-Line
By Bluelab
In Stock
$487.01
$487.00

mpn: MONGUACONIN, ean: 9421024920807,

4.0 out of 5 stars with 107 reviews
The Bluelab Guardian Monitor Connect Inline is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient solution, it also data logs these critical parameters to your computer for you. It does not stop there. You can access the data via the cloud from a remote mobile device or computer to check for extreme variances to ensure these critical parameters are hitting the mark for crop success. For remote or cloud access, the computer you are already


GH pH Control Kit
GH pH Control Kit
By General Hydroponics
In Stock
$25.34

mpn: 722080, ean: 8927615884790,

4.4 out of 5 stars with 113 reviews
General Hydroponics® pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.GH pH Control Kit. Brand Name: General Hydroponics. PH/EC/TDS Meters and Solutions Parts & Systems for Hydroponics. Package Contains: 1 Units. USA & Canada Warehouses, Fast Shippings.


General Hydroponics GH1514 General Hydroponics Ph Control Kit (Pack of 2)
General Hydroponics GH1514 General Hydroponics Ph Control Kit (Pack of 2)
By General Hydroponics
In Stock
$43.76

ean: 0793094246941,

4.1 out of 5 stars with 147 reviews
pH controls is essential for stimulating vigorous plant growth. The pH scale measures acidity or alkalinity on a scale of 0-14. Below 7.0 the pH is acidic. Above 7.0 , the pH is alkaline. 7.0 is nuetral. The best pH for general plant growth is in the range of 5.5 to 6.5, slightly acidic.Nutrient solution that is too high (basic) or too low (acidic) cannot be properly asbsorbed by plants. Incorrect nutrient solution pH can cause slow growth,sickly plants and low yields.Designed to work superbly


Safergro 9920 pH Down - Gallon
Safergro 9920 pH Down - Gallon
By Safer Gro
In Stock
$120.41

mpn: 9920, ean: 0644189992031,

4.9 out of 5 stars with 113 reviews
Certified Organic Acidifier. pH Down is an additive designed to use where the pH needs to be lowered into a more acidic range. The organic acid present in pH Down gently lower the pH of water, making nutrients more available and increasing uptake. pH Down can also remove scale and hard water deposts, and is excellent as a greenhouse cooling pad cleaner. 1 gallon concentrate makes 70 to 2,560 gallons of solution depending on the original pH of water. Dimensions;. Length: 6.75. Height; 10.25.


Leisure Time 45410 pH Balance Plus Outdoor, Home, Garden, Supply, Maintenance
Leisure Time 45410 pH Balance Plus Outdoor, Home, Garden, Supply, Maintenance
By Garden & Lawn Supply
In Stock
$39.99

mpn: HM-OTDR-717046897, ean: 5662252319979,

4.5 out of 5 stars with 20 reviews
Lock in the proper pH level from refill to refill, even in hard water areas. Fast Dissolving, easy to use granular formula. Locks in the spa or hot tub pH level until the next refill. Compatible with chlorine or bromine sanitizers. Instructions: Add 1-1/2-pound (half the jar) of pH Balance Plus for up to 250 gallons of spa water or the entire 3-pound for up to 500 gallons of spa water. Pour directly into spa. Turn on jets and allow water to circulate for 15 minutes. Temporary cloudiness may


General Hydroponics GH pH 4.01 Calibration Solution Quart (12/Cs)
General Hydroponics GH pH 4.01 Calibration Solution Quart (12/Cs)
By General Hydroponics
In Stock
$18.99
$16.17
You Save: 15%

mpn: GH1542, ean: 0793094015424,

4.7 out of 5 stars with 136 reviews
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 each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.Highest quality reference solutions. Compatible with many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). Each batch is checked to ensure that our


Bluelab Guardian Monitor Connect In-Line
Bluelab Guardian Monitor Connect In-Line
By Bluelab
In Stock
$564.99

mpn: 716485, ean: 8927615884394,

4.4 out of 5 stars with 36 reviews
The Bluelab Guardian Monitor Connect Inline is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient solution, it also data logs these critical parameters to your computer for you. It does not stop there. You can access the data via the cloud from a remote mobile device or computer to check for extreme variances to ensure these critical parameters are hitting the mark for crop success. For remote or cloud access, the computer you are already


Bluelab PowerPod
Bluelab PowerPod
By Bluelab
In Stock
$529.99

ean: 9421024920906,

4.5 out of 5 stars with 133 reviews
The Bluelab® PowerPod™ is an electronically controlled mains switching box that is designed to activate mains powered equipment via control signals from a Bluelab® controller. The Bluelab® PowerPod™ is ideal for use when using a Bluelab® Pro Controller™ with third party mains powered pumps, heaters and coolers for temperature control. Compatible with Bluelab® Pro Controller and Bluelab® Dosetronic™ models. Adds temperature control to Bluelab® Pro Controller and some Bluelab®


NEW Model Hanna Instruments HI 98107 pHep pH Tester, W/+/- 0.1 Accuracy
NEW Model Hanna Instruments HI 98107 pHep pH Tester, W/+/- 0.1 Accuracy
By Hanna Instruments
In Stock
$59.99

mpn: HI98107,

4.3 out of 5 stars with 76 reviews
Waterproof pHep pH Tester The Hanna Instruments HI98107 pHep® pH tester is a rugged and reliable pocket-sized tester for use in the lab or field. This modern looking meter is only 0.7'' thick and extremely ergonomic, fitting comfortably in your hand. This tester keeps things simple with a two-button operation; one for ON/OFF, the other for Calibration. The HI98107 tester features a large multi level LCD which displays both pH and temperature readings simultaneously. The pH readings are


Digital Water Quality Tester Pancellent TDS PH EC Temperature 4 in 1 Kit, Accurate TDS Range 0-9990ppm and 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range
Digital Water Quality Tester Pancellent TDS PH EC Temperature 4 in 1 Kit, Accurate TDS Range 0-9990ppm and 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range
By Digital Water Quality Tester
In Stock
$39.99
$16.99
You Save: 58%

ean: 0752097661021,

4.8 out of 5 stars with 10 reviews
The PH meter is a professional and handy tool to quickly and accurately get an indication for the ph level of the solution.It's not only ideal for household or laboratory use. Also suitable for testing pH balance of drinking water, pools, aquariums, RO system, Spas, hydroponics food, wine and beer making and more. What Is TDS and Why Should You Care Total Dissolved Solids (TDS) is the total weight of all solids (minerals, salts, or metals) that are dissolved in a given volume of water,


Gift, 3 in 1 PH Tester Soil Water Moisture Light Test Meter for Garden Plant Flower Mchoice
Gift, 3 in 1 PH Tester Soil Water Moisture Light Test Meter for Garden Plant Flower Mchoice
By MChoice
In Stock
$19.99

mpn: 4332684493, ean: 0655172059341,

4.9 out of 5 stars with 26 reviews
Specifications: 3 functions in one compact meter - measure the moisture and pH content of the soil and the environmental light Scientifically accurate No need for batteries Easy-to-read scale indicator Incredibly simple to use - just stick it in the soil! Works with house and garden plants Instructions included Brand new and packaged Product Properties Display Type:Analog With Backlight Or Not:No DIY Supplies:Woodworking Name: soil PH tester Specification: Meter: 5 x 8 x 3.5cm [2 x 3.2 x


Digital pH Meter with Auto Calibration Button with ATC, 0.01pH High Accuracy, pH Buffer Solution and Carrying Case, pH Tester for Aquarium, Drinking Water, Pools & Spas, Hydroponics Gardening(Blue)
Digital pH Meter with Auto Calibration Button with ATC, 0.01pH High Accuracy, pH Buffer Solution and Carrying Case, pH Tester for Aquarium, Drinking Water, Pools & Spas, Hydroponics Gardening(Blue)
By mooncity
In Stock
$32.99

mpn: 4316275974, ean: 0608473150538,

4.8 out of 5 stars with 83 reviews
NEW! The Mooncity PH-90 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Specifications: Measure Range: 0.00-14.00 pH Resolution: 0.01 pH Accuracy:±0.01 pH Calibration: Digital automatic calibration (one point) Automatic temperature compensation: 0-50℃/ 122℉ Button battery: 2X 1.5V LR44 (included) Product dimensions:


Earth Juice Natural Down 1.6 lb
Earth Juice Natural Down 1.6 lb
By Earth Juice
In Stock
$36.99

mpn: 722173, ean: 8927615884905,

4.5 out of 5 stars with 67 reviews
pH adjusting crystals that will, once and for all, eliminate the hassles and worries of spilling, splashing and dealing with harsh liquid pH adjusters. Use to adjust the pH of fertilizer and plant micronutrient foliar solutions.Earth Juice® Natural UP & Natural DOWN. Brand Name: Earth Juice. PH/EC/TDS Meters and Solutions Parts & Systems for Hydroponics. Package Contains: 1 Units. USA & Canada Warehouses, Fast Shippings.


HomeBox Evolution R240 Grow Tent - 240cm x 120cm x 200cm
HomeBox Evolution R240 Grow Tent - 240cm x 120cm x 200cm
By Homebox
In Stock
$845.00

ean: 5052647030457,

4.1 out of 5 stars with 122 reviews
HomeBox Evolution R240 Grow Tent - 240cm x 120cm x 200cm High-tech German design and engineering Seamless no-trip entry Rugged, plant-safe materials ensures long working life All parts are replaceable Removable, water-resistant flooring Double side access Inlet and outlet tubes: 100 mm (4): 1x right, 1x left, 2x Roof 150 mm (6): 1x right, 1x left 200 mm (8): 1x right, 1x left 250 mm (10): 2x Roof 4 x 200mm (8) OmniFlow air vents 2x Back, 1x left and 1x right 700-micron MicroMesh bug-screen


Bluelab Combo Meter
Bluelab Combo Meter
By Bluelab
In Stock
$305.99

mpn: 716441, ean: 8927615884271,

4.1 out of 5 stars with 13 reviews
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 crops daily nutrient requirements. Simple push button pH calibration. Successful pH calibration indicators. Low battery indicator. Over range and under range indicators. Display options available in degrees °C & °F, EC, CF, ppm 500 and ppm 700. Supplied with 2x AAA


Bluelab PENSOILPH Soil Tester pH Pen Outdoor, Home, Garden, Supply, Maintenance
Bluelab PENSOILPH Soil Tester pH Pen Outdoor, Home, Garden, Supply, Maintenance
By Garden & Lawn Supply
In Stock
$199.99

mpn: OUTDRUKK4910309, ean: 5557889996795,

4.7 out of 5 stars with 11 reviews
A handy solution made easy! The Bluelab Soil pH Pen provides a pH and temperature reading of soils and media, so you know that the right nutrients will be made available to your plants. In soils or growing media, pH strongly influences the availability of the microorganisms to plants in the soil. Now you can closely monitor and adjust the pH levels to optimize plant health and performance. It will also measure solutions too. Now, isn't that handy? Not suitable for measuring Distilled, RO


Bluelab Guardian Connect
Bluelab Guardian Connect
By Bluelab
In Stock
$300.00

ean: 9421024920586,

4.7 out of 5 stars with 140 reviews
The Bluelab® Guardian Monitor Connect is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient solution, it also data logs these critical parameters to your computer for you. It does not stop there. You can access the data via the cloud from a remote mobile device or computer to check for extreme variances to ensure these critical parameters are hitting the mark for crop success. Just one Bluelab® Connect Stick is required to receive wireless


Safer Gro 9920Q pH Down Acidifier44; 1 Quart
Safer Gro 9920Q pH Down Acidifier44; 1 Quart
By Safer Gro
In Stock
$18.61

mpn: 4336465129, ean: 0644189992024,

4.9 out of 5 stars with 142 reviews
pH Down is an additive designed for use where the pH needs to be lowered into a more acidic range. The organic acid present in pH Down gently lowers the pH of water making nutrients more available and increasing uptake. More plants thrive at slightly acidic conditions. Unlike other hazardous pH lowering agents pH Down is safe to handle and is suitable for use in organic food production. pH Down has several functions - compatibility agent acidifier activator and chelator. It is an organic based



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