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Testing & Monitoring

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Gh Phdown

General Hydroponics pH Down

Original price was: $10.59.Current price is: $6.78.
Gh Phup

General Hydroponics pH Up Liquid

Original price was: $10.59.Current price is: $6.78.
General Hydroponics Ph Control Kit For Hydroponics

GH pH Control Kit

Original price was: $22.75.Current price is: $13.80.
Advanced Nutrients Ph Down

Advanced Nutrients pH Down

Original price was: $14.18.Current price is: $10.64.
Hanna Quick Calibration Solution

Hanna Quick Calibration Solution

Original price was: $1.56.Current price is: $1.34.
Advanced Nutrients Ph Up

Advanced Nutrients pH UP

Original price was: $14.18.Current price is: $10.64.
Hanna Instruments HI9814 Meter

Hanna GroLine Waterproof Portable Meter

Original price was: $324.95.Current price is: $239.95.
Hanna Groline

Hanna GroLine pH Meter

Original price was: $59.00.Current price is: $52.26.
Bluelab Combo Replacement Ph Probe

BlueLab Combo pH Probe

Original price was: $92.00.Current price is: $71.76.
Bluelab 7 Solution

Bluelab pH 7.0 Solution

Original price was: $11.33.Current price is: $8.84.
Gh Calibration Solution 7

GH pH 7.0 Calibration Solution

Original price was: $25.75.Current price is: $18.95.
Bluelab 4 Solution

Bluelab pH 4.0 Solution

Original price was: $11.33.Current price is: $8.84.
Bluelab Ph Pen

BlueLab pH Pen

Original price was: $125.00.Current price is: $97.50.
Hanna Groline Waterproof Ph Meter

Hanna GroLine Waterproof pH Meter

Original price was: $79.00.Current price is: $74.95.
Hanna Groline Soil Ec Tester

Hanna Groline Soil EC Tester

Original price was: $149.95.Current price is: $129.95.
BlueLab Guardian Monitor with Wifi

BlueLab Guardian Monitor with Wifi

Original price was: $459.00.Current price is: $358.02.
Bluelab Ppm Pen

BlueLab PPM/Conductivity Pen

Original price was: $105.00.Current price is: $81.90.
Hanna Instruments Quick Cal 500mL

Hanna Instruments Quick Calibration Solution – 500ml

Original price was: $24.05.Current price is: $22.95.
Gh Calibration Solution 42

GH pH 4.01 Calibration Solution

Original price was: $25.75.Current price is: $11.97.
Hanna Groline Combo Phec Meter

Hanna GroLine Combo pH/EC Meter

Original price was: $225.00.Current price is: $175.75.
General Hydroponics pH Test Kit 8oz

General Hydroponics pH Test Kit – 8 Ounce

Original price was: $14.53.Current price is: $8.82.
Bluelab Probe Care Kit Ph

BL Probe Care Kit – pH

Original price was: $25.00.Current price is: $19.50.

About Testing & Monitoring

Know your water before you grow! HTG Supply's selection of water quality testing and monitoring equipment is key to successful home cultivation. Not all water is created equal, and when growing indoors it is of the utmost importance to know the quality of the water you're feeding your plants. Testing and monitoring equipment can detect pH and total dissolved solids (TDS) issues before they happen, and the knowledgeable gardener can make quick decisions with that instant information. Shop now to find the right equipment for your water testing.

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