When comparing to regular potting soils, HydrotonÃ¢â€žÂ¢ offer many clear advantages. Not only is HydrotonÃ¢â€žÂ¢ completely clean and odorless, they are an ideal oval shape without sharp edges that could potentially damage roots. HydrotonÃ¢â€žÂ¢ provides excellent aeration to the roots while preventing root rot, excess acidity and soil borne pests. Manufactured with simple clay, HydrotonÃ¢â€žÂ¢ hold significant moisture while its balanced capillary action ensures even water availability to developing root systems. 10 liter bag. Manufactured in the EU.