Step 5: Assembly
2. I drilled a vent at this point, for test purposes only, in the bottom of each Gatorade bottle, but to make a planter, simply cut the bottom off and fill with grow medium.
3. Screw on bottles, line them up as best as possible and leave to rest while the vinyl finishes reshaping itself.
4. Cap the ends of the tube, with the "Air Control Cap" going on the upright turned end.
Attach air hose to pump. Fill tube with just enough nutrient, through planters. Test.
Any unused planter holes can be plugged as required.