This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lavafilter. constantly submerged lavafilter used frequently in agricultural companies to allow constant and pure water source for irrigation The lavastone mass with waterpurifyingplants Iris pseudacorus is correctly dimensioned at of the water mass own original text selfmade KVDP talk KVDP Original upload log en Lavafilter KVDP