BioNova PK 13-14 (Phosphorus+Potassium) 250 ml is a high-quality fertilizer solution that has been specially developed to meet the phosphorus and potassium requirements of plants during the flowering phase. By adding these nutrients in a targeted manner, you can promote the flowering and fruiting of your plants. The bottle contains 250 ml of concentrated solution that can be easily diluted with water and applied directly to the root zone of your plants.