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Hydro Axis EC Pen Tester

$49.00 $45.00

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MEASURES THE QUANTITY OF NUTRIENT IN YOUR RESERVOIR.    The HYDRO AXIS EC (Electrical Conductivity) Pen accurately tests the quantity of dissolved mineral salts in your reservoir allowing you to know exactly how much hydroponic nutrient to use for optimal plant results.   This is a good quality EC pen & very easy to calibrate.

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Recommended EC for common vegetables as follows.   Note (Half this amount for seedlings)

  • Beans         EC1.8 – 2.2
  • Brocolli       EC2.8 – 3.5
  • Capsicum   EC1.8 – 2.2
  • Celery         EC1.8 – 2.4
  • Cucumber   EC1.7 – 2.5
  • Eggplant     EC2.5 – 3.5
  • Lettuce       EC0.8 – 1.2
  • Pak Choi    EC1.5 – 2.0
  • Spinach      EC1.8 – 2.3
  • Tomato       EC2.0 – 5.0
  • Zucchini     EC1.8 – 2.4

How to read the EC Tester:

The electronic display on the EC pen requires a factoring of 100.   Easiest way to use this is to pretend there is a decimal place before the 3rd   Therefore, if you see the number 150, that means there is an EC 15.0  (Way too high!)   If you see 015, that means you have an EC 1.5 (Perfect).   001 = 0.1 EC and so on….   The EC Pen generally will not read if the EC is above 20.0, therefore if you see a weird reading, it’s likely the EC is too high to be read properly by the pen.  So add more water and re-test…..

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