I already wreaked havoc in my fish tank (extra, extra! a giant hand has tore up the tropical city!) by taking out the driftwood and trying to attatch the java fern on it, only to realize that my pond snail got active again and ripped the tread apart (as usual)... I want to try rubberband but i think it'll be too tight. how else can i attatch java fern to my driftwood? I want something easy, not like fishing line where you have to take it out later...