Hey Spider, yup - i think it boils down to care. I dont see why a large tank needs to be more of a concern. Someone mentioned if rocks or whatever falls against the acrylic its gonna scratch - i say bring it on, cos i'd rather a scratch than a smashed glass panel Personally, Ive been trying to find a manufacturer who does those double and triple octagonal tanks that link together with a couple of square swim-throughs (for want of a better description). A mate had one in Europe and it looked pretty cool, and the fish seemed to love the fact they could swim off and explore. (God did i really say that, lol)