+20 Best Fish For Container Water Garden Ideas. Since water weighs eight and a third pounds per gallon, a 20 gallon. The good news is that you can keep many types of fish inside a smaller space but there are a few things you will need to know before starting.

Whether you have a modern landscape, a rustic garden, or just a bit of patio space, you. These are considered invasive species that are overtaking some waterways and lakes in north america. Pumps and fountains are not required, but do add to the pleasure of a patio water garden and can help in maintaining fish.