Strong movement of the water surface is generated by the EHEIM Wide-jet pipe, which liberally flushes oxygen into the water and imitates the natural movement of water. The Wide-jet pipe with its specially shaped outlet opening spouts the water cleaned by the filter in a Wide jet onto the surface. This creates the desired movement.
- Anders S. wrote about EHEIM Wide jet pipe in 2018:
Works great and creates a nice outflow stream