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Meters/Timers

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Displaying 21 to 30 (of 34 products) [<< Prev]   1  2  3  4  [Next >>] 
 Product Image   Product Name-   Price 
 GH pH Test Kit   GH pH Test Kit   $7.95
 
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1 oz. test kit with test vial offers wide spectrum testing (pH 4.0 to 8.5). This concentrated solution requires only 5 drops per test.
 GH pH Test Indicator 8 oz   GH pH Test Indicator 8 oz   $9.95
 
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Fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3 drops...
 GH pH Down qt   GH pH Down qt   $12.95
 
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This concentrated acid formula is used to lower the pH in a reservoir.
 GH pH Down pt   GH pH Down pt   $7.95
 
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This concentrated acid formula is used to lower the pH in a reservoir.
 GH pH Down Gal   GH pH Down Gal   $29.95
 
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This concentrated acid formula is used to lower the pH in a reservoir.
 GH 1500 TDS Solution 8 oz   GH 1500 TDS Solution 8 oz   $7.95
 
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General Hydroponics™ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
 Electrode Storage Solution 16 oz   Electrode Storage Solution 16 oz   $11.95
 
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Use to store your pH meter electrode between use. This solution is designed to keep your electrode sensing membrane and reference junction clean and...
 Electrode Cleaning Solution 8 oz   Electrode Cleaning Solution 8 oz   $15.95
 
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Used to clean meter tip. Works for both pH and conductivity meters. Comes as a two part A and B cleaning solution to remove both organic and...
 Control Wizard 24-7 Nutrient Monitor   Control Wizard 24-7 Nutrient Monitor   $209.95
 
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This meter gives you the ability to monitor pH level, Nutrient Levels in EC and Nutrient Temperature. This continuous monitoring system requires no...
 Calibration Solution 7.01 8 oz   Calibration Solution 7.01 8 oz   $7.95
 
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General Hydroponics™ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
Displaying 21 to 30 (of 34 products) [<< Prev]   1  2  3  4  [Next >>]