A Glass Lily Pipe Set consists of two borosilicate glass pipes — an inflow pipe that draws water from the aquarium into the canister filter, and an outflow lily pipe whose characteristic flared, lily-flower-shaped mouth distributes filtered water back into the aquarium in a broad, gentle surface-skimming current. The lily pipe outflow design creates a surface agitation pattern that promotes CO2 exchange at the water surface while simultaneously circulating the entire water column.
Compared to standard plastic filter intake and outlet pipes, glass lily pipes dramatically improve the aesthetics of a planted aquarium. Their transparent, minimalist profile virtually disappears against the aquarium glass, allowing the aquascape composition to be appreciated without plastic hardware intruding on the view. They are considered a premium finishing detail in high-end Nature Aquarium and aquascape setups.
The 13/17 mm hose sizing fits the majority of medium canister filters commonly used in planted tanks of 60–200 litres, including models from Eheim, JBL, Fluval, and equivalent. Borosilicate glass construction ensures clarity that does not yellow over time and a surface smooth enough to resist calcium and biofilm buildup more effectively than acrylic alternatives.
