Increase Yields (), Crop Value ($), and Quality (%) with the best Fulvic Acid Supplement you can Buy Fulvic Acid is known to do a whole lot of good for plants. It is a natural chelating agent which improves nutrient absorption in the root zone. Inside the plant it acts as a "nutrient shuttle" allowing nutrients to piggyback a ride around the plant to wherever they are needed. Ruby Ful contains the highest quality fulvic acid which ensures that all the benefits of this marvellous supplement are completely exploited to the maximum. During the flush, it can assist the plant to transport excess nutrient and waste products downwards and out of the plant.