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PH/TDS Modifiers & Calibration

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Advanced Nutrients PH Down 1L
Advanced Nutrients PH Down is used to maintain the optimum pH levels for hydroponically grown, sphag..
$29.99
Advanced Nutrients PH Down 4L
Advanced Nutrients PH Down is used to maintain the optimum pH levels for hydroponically grown, sphag..
$84.99
Advanced Nutrients PH Up 1L
Advanced Nutrients PH Up is used to maintain the optimum pH levels for hydroponically grown, sphagnu..
$29.99
Advanced Nutrients PH Up 4L
Advanced Nutrients PH Up is used to maintain the optimum pH levels for hydroponically grown, sphagnu..
$84.99
Bluelab Combo Meter - FREE SHIPPING*
Bluelab Combo Meter It's all you need for simple and reliable crop management. The Bluelab Com..
$315.99
Bluelab pH 4.0 Calibration Solution 500mL
Bluelab pH 4.0 Calibration Solutions pH instruments must be cleaned and calibrated at least ..
$12.99
Bluelab pH 7.0 Calibration Solution 500mL
Bluelab pH 7.0 Calibration Solutions pH instruments must be cleaned and calibrated at least ..
$12.99
Bluelab pH Meter
Accurately measures the pH value of a solution so you know if any adjustments are required. Pla..
$259.99
Bluelab pH Pen - FREE SHIPPING*
Bluelab pH Pen The ultimate handy solution for measuring pH and temperature! Plants get their ..
$119.99
Bluelab pH Probe
A replacement probe for Bluelab Combo and pH Meters, and Guardian Monitors The Bluelab pH Probe..
$87.99
Bluelab Probe Care Kit – pH & Conductivity
Bluelab Probe Care Kit – pH & Conductivity Everything you need to clean, hydrate and calibrat..
$29.99
General Hydroponics pH Control Kit
The pH Control Kit by General Hydroponics provides everything you need for testing the pH level of t..
$34.99
General Hydroponics pH Down 1 Quart
General Hydroponics pH Down 1 Quart pH Adjusting Solution The premium solution maintaining and..
$13.99
General Hydroponics pH Test Indicator
General Hydroponics pH Test Indicator Kit General Hydroponics pH Test Indicator makes testing sam..
$11.99
General Hydroponics pH Up 1 Quart
General Hydroponics pH Up 1 Quart pH Adjusting Solution The premium solution maintaining and r..
$13.99