Flex Fertilizer System is a total concept on pure solution complex chemistry high efficacy liquid fertilizer. Flex Fertilizer is produced, marketed and distributed by our franchisees. NPK, Basis, Foliar and Specialities. Flex Fertilizer makes big reductions in N, P and micronutrients possible. Almost no leaching or evaporation of N. Slow release effect. Flex Fertilizer is very friendly to the environment and produces top yield, quantity and quality.