Magic Lily Pipe Set 13mm - Aquarium Plant Lily Pipe Fish Planted Tank Ada Filter Amano Aquascaping You are winning 1 Set of 13mm Inflow & Outflow Lily Pipes Produced by highest level of craftsmanship, the Flo pipes enhance the natural beauty of your aquarium Flo Outflow Pipes provides night time or lights-off aeration; creates a small whirlpool which removes the surface film Flo Inflow & Outflow Pipes are made for 13mm diameter filter tubing. Compatible with Eheim, Tetra and other filters. This auction includes 1 inflow & 1 outflow pipe. Diameter for filter tubing: 0.52" or 13 mm (1" = 2.5 cm). Note: Suction cups included.