If you have the right balance of plants and oxygen ... sides to support the water pressure. The most common cause of leaking in a concrete pond is through cracks created by winter frost damage.
Pickerel weed (Pontederia cordata) is another common aquatic plant that grows in ponds and on lake margins. It prefers flooded areas and has specialized tissues that transport air to its roots ...
The introduced species, Cyrtobagous salviniae, is a subaquatic herbivorous insect renowned for its ability to curtail the growth of the invasive salvinia plant.