Biofeed 90033-02 SOIL-PLUS® 8-2-4 Multi-Purpose Fertilizer 2-1/2 gal - SOIL-PLUS® is a dynamic soil conditioner and plant fertilizer which delivers a powerful combination of nutrients to strengthen plant growth and promote aerobic microbial activity below ground. This rich combination provides cellular nutrition on a molecular level that feeds both plant cells and soil organisms to stimulate the growth of beneficial aerobic soil microbes. These work to promote polysaccharide production which acts as the soil conditioner to reduce compaction. SOIL-PLUS® improves the dissolved oxygen content of the soil and root-zone. SOIL-PLUS® also contains complex organic compounds that dissolve insoluble soil minerals to enhance plant up-take, neutralize free salt to reduce toxicity, and help leach it out of the root zone.