I need some advice.I have a piece of wood that used to look like a tree (picture no leaves like in winter.) It was too large to fit in to the smaller tank i am moving it to so i cut off the "branches". Now i have a log and some twigs.The question is this-when I bunch the twigs together they have a nice look and I would like to arrange them this way in the tank. So how do I get them to stay together? I have heard silicone will eventually let loose and that fishing line will deteriorate over time. Someone recommended using stainless steel screws but I dont know about metal in the tank even if they wont rust.So any help would be greatly appreciated!!Thanks for your replies!!!!