Gold Label Soil A & B is a professional grade mineral two component base plant nutrient for the vegetative and flowering phase on peat and compost substrates. Add Soil A & B in equal quantities, 0.5-3ml/litre or until the desired EC. Never combine pure nutrients together, always mix in water. Shake bottles before use, store at room temperature. Optimized for Gold Label Special Mix peat substrates. Use in combination with Gold Label Roots, Ultra Mg and Ultra PK for optimum results.