Platinum Pro Grow 18-8-16Platinum Pro Grow 18 8 16 is a superior NPK blend, that is a fully soluble vegetative growth formula that promotes robust root growth, strong structural integrity and healthy foliage. Formulated with macro and chelated minors to ensure quick and efficient nutrient uptake and a healthy stand of plants, our 18 8 16 formula is compatible with all dosing systems and grow media.