Hydro Axis EC Hydroponics Pen



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.

See Reviews! →


Add-ons total:


Calculate shipping cost for this product.

Customer Rating (2) Submit a Review

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…..

2 reviews for Hydro Axis EC Hydroponics Pen

    March 25, 2024
    Great easy to use pen that's very accurate!!!
    Remember to pull the plastic tab out from under the batteries before the very 1st use.
    0 1
    Hannah Pickford
    October 30, 2021
    Simple and easy to use. Just remember to click the switch to turn it off after use!
    0 1
Add a review
Post a Review of the Product and Receive 20% Off Coupon

Your email address will not be published. Required fields are marked *

Add another image