This simple design glass pipe has suction slits. For use with a frame-less aquarium tank. Due to its slit form, it have advantage of not to suck in the withered leaves easily. but please make sure to remove the leaves stuck on the suction slits.
These pipes, Inflow Pipe (V) and Outflow Pipe (P), are made by glass. This is transparency so it does NOT disturb the appearance of aquarium and it is suitable for water plant layout because of good water current for it. Also, Out Pipe is special shape so you can use for aeration as well when you put and fix half of Out Pipe from the water surface. You can prevent deficiency of oxygen during the night and oil film by aeration.