Bags of Biology! Just Right Xtra was developed micro-bio-logically thru the use of a microscope. Just Right Extra is teaming with beneficial microbes, bacteria and fungi. Just Right Extra has gone well beyond the basic delivery of the traditional, essential, 19 major, minor, and micro elements found in most plant nutrient regimes. Just Right Extra delivers biodiversity and  the importance of the 10's of thousands of biological species that our found naturally in pristine soil ecologies. This spectacular soil contains the best inputs General Hydroponics has to offer! Cocotek coconut coir, Ancient Biology Alaskan Forest Humus, Subculture M mycorhizae innoculant, Subculture B probiotic inoculum and Rare Earth prophylactic clay. This mix also contains the finest worm castings, natural organic potash and organic bone char. This mix has a perfect pH of 7.01 to keep the bacteria and fungi perfectly happy and healthy!