VIV produce a wide range of glass accessories for the aquarium, made from high quality, laboratory grade glass, with gives maximum strength, durability and visual clarity. The hand crafted glassware is designed to achieve the perfect blend of art and function that are highly transparent and almost invisible in the water. Ideal for giving a professional look to any planted aquarium. Lily Pipes are designed with the image of a lily flower. The elegant design is also very functional and creates an ideal water flow for the growth of aquatic plants, where a lower water flow is needed. The small Lily out-flow Pipe has a 13mm diameter and is designed to be used for the water return from the filter to the tank.