Composition for use as a bottom layer for garden ponds contains a low level of plant nutrients but allows easy rooting of oxygen-providing plants which are forced to extract nutrients from the pond water

摘要

Compositions for forming the bottom layer of garden ponds, having a low content of plant nutrients but good rooting capability for oxygen-producing plants. Improved bottom layer material for garden ponds comprising a rooting medium with a low content of plant nutrients but which provides for easy rooting of oxygen-producing plants which are then forced to extract the necessary nutrients from the pond water.