Food-grade Materials: Adopted food-grade PVC-U, pipes are lighter and more corrosion resistant. The resistance of water flow in PVC-U water pipe is small, so the nutrient solution can reach the plant roots smoothly, and it is not easy to block..90 Sites Hydroponic Grow Kit: The listing is about Hydroponic Grow Kit, 10 pipes, 3 layers, 90 plant sites, ideal water culture garden system..High Yield & Good Quality: Soilless cultivation can fulfill the production potential of crops. The yield can be increased in multiples compared with the traditional soil cultivation. Requires less water, less space, and pests and diseases are more easily controlled and prevented.Simple to Assemble & Use: Extremely simple to assemble and use, this hydroponic indoor or outdoor grow system is designed for fast, maximum-convenience vegetable gardening. Perfect for beginners! No experience needed..Wide Application: It is especially suitable for leafy vegetables in home, garden and office, such as lettuce, herb, celery, cabbage, etc.