The Bluelab EC Pen is a handheld professional meter for testing the strength of nutrients you have in your solution to ensure your plants are fed the right amount of minerals and it also tells you the temperature of your nutrient solution in Celsius or Fahrenheit.
The Bluelab EC Pen accurately measures the solution and displays the reading in 0.1 increments on a backlit LCD display, with a range from 0.0 – 10.0 EC. The Pen has a hold function so you can store the reading to view it once you have removed the Pen from the solution and it also has a low battery warning and is fully waterproof.
Measuring the conductivity every day is the best way to avoid over-diluting or over-concentrating your nutrient solution. Completely change the reservoir solution every 7 days. Top up the nutrient level between changes – so your plants always have the right amount of food.
The Bluelab EC Pen also measures the temperature of the solution, as root health is vital to the success of a crop. Temperature affects the growth rate and structure of a plant so a solution temperature of 18 – 22?C or 65 – 72?F is recommended.
To make sure the plants can get at the food, you need to measure the pH of the solution. Check out our handy Bluelab pH Pen so you have every tool required to manage your nutrient solution.