Harrell's Bio-MAX 4-0-0 is a unique blend of nitrogen, seaplant extract, fulvic acid, UMAXX, chelated iron and manganese. Bio-MAX 4-0-0 is designed to help defend turf against various stresses, while promoting photosynthesis, cell division and root growth.
Many superintendents count on Bio-MAX 4-0-0 for healthy, vibrant turf.