Rhino SkinAdvanced Nutrients Rhino Skin is a special formulation of silica, developed to be easy to mix with water and to be easily absorbed by plants. Silica strengthens cell walls, stems and leaves. Advanced Nutrients Rhino Skin is part of the Advanced Nutrients pH perfect product range too! Advanced Nutrients Rhino Skin is a very effective plant improver which can be used right the way through your grow from cutting to harvest. Rhino Skin provides your