They are vital if you have fish ... pond as they add oxygen to the water. You can have deep marginals that happily sit in ...

It is unclear what level of zinc is toxic to fish; however ... giving your small container koi pond a more natural look. Then, you can plant water-loving plants in and around the pond to hide ...

It’s also outfitted with a modest waterfall and a few indoor plants ... the water and isn’t great for fish). Overall, compared to some of the inside koi ponds I’ve seen — it’s above ...