Let's say that we want to have a 3-layered hydroponic tower. Then we will need:

3x TowerMiddle (it's in the printable files)

3x WaterGive

15x Pot (there are 3 layers, 5 pots per section ==> 3*5=15)

1x Top PRINT IN VASE MODE (in all towers just need one)

1x Base (in all towers just need one. This is used for connecting tower to water storage. Note: you can modify it if you don't have a water jug in picture.)

1x 5 gallon water jug (not 3d printed, you can buy one at the store. A alternative is using a water bucket, and modifying the Base because I designed it for the 5 gallon jug)

To assemble, glue one WaterGive at the bottom of each TowerMiddle. This is for distribute water to the next level. Then, just twist the 3 TowerMiddles together, with the Top. If you have a water jug as in the picture, twist the Base on, and put on water jug. If you don't, then just modify the base so it can fit on your desired water storage bucket. There is a hole going through the entire thing (as seen in a picture), for a tube for a water pump.