Rich soil life is crucial for organic plant growing. Biotabs PK Booster Compost Tea promotes soil life and increases the growth and health of your plants. With a unique blend of bacteria that generate phosphorus and mobilize potassium, this tea offers a real PK boost. Ideal for indoor and outdoor growing, the tea can be used when watering or as a foliar spray. Prepare the tea according to the directions and use during the growing cycle for optimal results.