Click and Grow Pro Cup Kit for Smart Garden, 9 pcsNew cup design to encourage growth in fruiting plants. The Click & Grow Pro Cup is perfect for advanced users who wish to increase the root space of plants to pro long their life span and increase yield. The plants will be able to grow their roots directly to the water tank which will increase their life span and yield, but will also require more diligent cleaning from the user once changing the plant. To start using the pro cups, just exchange the