So far, you have not used expanded clay ? See what your plants have lost! Loosens and aerates the soil Provides air access to the root system A layer of expanded clay added to the bottom of the pot (2-3cm) prevents the plant from overflowing and does not lead to root rot The pot also has two rubber plugs to clog the water drain The main reasons why it is an essential element: The holes provide drainage of excess water, which prevents root rot and mold growth, to ensure even better drainage, it is also good to pour a layer of expanded clay on the bottom, which will additionally isolate the roots of the plants from the bottom. The plugs in the pot also have a ventilation function,