I just thought I'd post some pics of my tub gardens I have on each side of our driveway pad. We don't have liners in ours. Most people do use liners or tub inserts. It is just a way to enjoy water gardening without the work of putting in a pond. Mine would look better if the wild critters would leave them alone. One plant had pretty little purple flowers on it but the magpies pulled them all off. The deer drink out of them all the time and nibble on the plants.
Those are nice, Pain. How do you secure the plants? Do you have dirt on the bottom. As you can tell, I don't know much about tub gardening or ponds for that matter. LOL
Each plant is in dirt in its own pot. I used to keep fish in them too. But, the poor fish were easy pickins for critters. Also, I cram so many plants in the tubs that there isn't much room for the fish. I would usually just keep a couple of small fish in each one.