For Nature Aquarium,  the Lily pipe with  its unique shape is used as the outflow pipe to achieve  a  sufficiently  moderate  flow  of the water from the  external filter. The Lily Pipe eases strong water flow with its trumpet-like outflow port.

If exposed to excessively strong water flow, aquatic plants planted in aquarium can fall  out easily or may not grow properly. On the other hand, aquatic plants do not grow healthily without water flow  due  to  insufficient supply of CO2 and nutrients to the surface of the leaves. For these reasons, adequate water flow is essential  in a tank with  aquatic plants.

The outflow glass pipe has the  effect  of easing water flow adequately. When the water flow needs to be controlled according  to the fish species kept in the tank, this is possible by changing  the existing outflow  glass pipe to Poppy Glass or Violet Glass type. The Poppy Glass reduces the water flow rate and is suitable for fish such as guppies and betta that prefer a  gentle water flow, while the Violet Pipe which increases the water flow rate is suitable for fish such as carp and characins that prefer a  slightly more intensified water flow.

For the Poppy Glass and Violet Glass, the matching inlet pipes are available to achieve a  harmonious  and coherent design. Outlet pipes including  Lily Pipe also have an aeration effect if installed in an appropriate  position  and   help   prevent  lack  of oxygen or formation of oil film.