Every so often I do a search on plant walls and vertical gardening to see what’s new. This morning I ran into this. It’s pretty cool! But better than just the idea is the way this system works. It is built on the airlift model. Instead of using a pump and timer to handle delivering the nutrient rich water, the system uses an aquarium air pump. While you can buy the whole system, they provide full instruction for a number of different models that can be made from plastic water bottles.
This is very cool. If you’ve got a kid who needs a science project, the hanging plastic bottle farm would be a stellar undertaking. Add an aquarium and some fish and you’ve a great “watch it work” project!