My GT2 had a baby!!! Complete with compost tube in the middle, and I can access the compost and compost tea from the bottom layer. Also, I can make it as tall as I want, But I probably make it 4 or 5 layers high just to see how steady it is with the soil all filled up. Each layer has 3 pockets. How do you like that!!! I am going to try to grow exclusively herbs in this one. Have yet to fill it up and put in seedlings and worms. I am so excited about the new birth. Will let you all know how it does.