Question 1

What is the difference between Hanna and BlueLab PPM scales?

Accepted Answer

Hanna uses a 0.5 conversion factor (1.0 EC = 500 PPM), while BlueLab/Truncheon uses a 0.7 conversion factor (1.0 EC = 700 PPM). Our converter translates both instantly.

Question 2

How often should I feed my plants nutrients?

Accepted Answer

In soil, feed every other watering (water-feed-water). In coco coir or hydroponics, feed with every watering since the medium contains no native nutrients.