Once you’ve chosen a spot for your container water garden – remember, 6 or more hours of direct sunlight a day, no overhanging trees, and a nearby water source (and power source if you’ll be using a circulating pump for a waterfall) – you get to the fun part. Most home and garden supply store chains carry all the materials you need to create small ponds, including plastic liners – but you’re only limited by your imagination and a few basic rules in choosing a container for your water garden. I.