Caractéristiques de la Piscine Astrale Il s'agit d'un assortiment parabolique laminaire qui, au cours de son parcours, ne libère aucune goutte d'eau. It is equivalent to a glass or fibre optic tube. It has an internal lighting system, which conducts the light power along the entire length of the jet. Manufactured in AISI 316 stainless steel, which makes it very robust and more resistant to oxidation, providing a more elegant finish to the fountain..