Canna Nutrients Substra Soft Water Flores A, 20 LiterCANNA Substra Flores is a complete professional nutrient for the flowering phase of plants. It is specially developed for growing in inert run to waste systems. If you grow on a run to waste system, you need a plant nutrient that exactly suits the needs of this special growing method. The substrates used in run to waste are mostly inert (which means they don't add or take nutrient elements from the nutrient solution). So all the nutrients have to be