Grow More Soluble 6-30-30 Standard, 25 lbsGrow More Soluble 6 30 30 Standard, 25 lbs For those special requirement low Nitrogen situations when high amounts of Phosphate and Potassium are needed to firm or size fruits or vegetables. Grow More Fertilizers are formulated to supply sufficient amounts of extra nutrients for high yields. High solubility, purity and the special forms of nitrogen, phosphorus and potassium make Grow More Fertilizers the ideal product. Water Soluble General Purpose is