For the U.K. client , who is interested in growing edible flowers, herbs, and leafy greens outdoors using hydroponic towers, we recommended the 6p15 model (80*80*300 cm with 90 planting holes) due to its suitability for unrestricted height. We showcased positive feedback images demonstrating great planting results. However, considering cost efficiency for the sample testing phase, we suggested starting with the smaller 6p9 model, which would reduce both shipping and product costs. Ultimately, she chose to purchase 4 sets of the 6p9 tower for her initial testing.