Ordered a set of three young java ferns, with the intention that they'd show up a little after my tank and heater. However, the merchant took too long processing the order, and it's not due to show up for at least a week. Meanwhile, the java ferns arrived today, and I have no idea how to keep them alive until then. I thought of just getting room temp water, floating the bags, and keeping them there for a while, but I am a newbie and fear doing the wrong thing. Help! Time truly is of the essence!