'- NEW - HY PRO TERRA 0,5L (GROW+BLOOM)Growers who use HY PRO products during the complete growing period, can expect an exuberant grow and flowering. Common potting soil contains only feeding substances for the first weeks. Most other breeding grounds also lack sufficient feeding substances. Disadvantages of garden soil: Even common garden soil is not ideal, because it often contains pollutions that can harm a plant. Moreover, it is difficult to indicate the exact fertilising ingredients