It is excellently suitable for smaller ponds with fish in which the oxygen level drops mainly in summer at high temperatures the pump is set up outside of the water and is operated independent of the power supply via the solar panel with direct incident sunlight in this way oxygen can be pumped into the pond through the 2 metre long silicone hose and a sparkling stone aragonite the solar module has a multi purpose ground spike with which the module can be set up vertically inserted in