When using Advanced Nutrients pH Perfect Sensi Bloom A+B 5 l, the internal pH Perfect® technology automatically stabilizes the pH in the optimal range and ensures stability for a week. This product provides all the necessary nutrients for excellent plant growth, including primary, secondary and micronutrients, as well as amino acids, humic acids and non-ionic surfactants. pH Perfect Sensi Bloom is ideal for large, heavy and lush flowers.