Dear all I'm sorry but maybe I'm going to say something wrong. What about the environnement when we treat the net cages with bitume to avoid fooling. I 've we got study the impact on the environement. All the best  Christophe Dupuy. +33(0)6 26 36 39 45 christophe_otropic@yahoo.fr ~ ~ ><)))°> Save a tree. Do not print this message if not really necessary.