Well, winter has killed me, my two small ponds are completely shut down and my large one has done great so far but I'm going nuts not being able to work on them!! Anyway, was wondering if I really need to line the bottom of my large pond with rocks? I've heard some say yes for looks and fish health and others say no...I'm confused. Also, anyone have any clever ideas about shelving for plants that looks natural? When we dug the hole, there were shelves in the plan but none were actually dug out...