A 92 gallon corner tank has a footprint that is 1/4 of a circle. The front is curved, and the distance from the front glass to the rear 90 degree corner is 34", minus the back corner over flow box, so call it 30". That's a long way, and I'm a little worried about making it so easy for the octopus to be 30" away. Am I likely to be frustrated that the bimac is too far away to see most of the time? Water tends to magnify things and make them look closer, so maybe it won't be a problem, but I'm looking for opinions. BTW, One reason I like the idea of a 92 corner is that I'm going to chill my water to around 60 degrees, and a 92 corner has less surface area per gallon than any other shaped tank, and so can be insulated more easily (I also plan to bend a sheet of acrylic or lexan around the front to make it double paned, so all sides will be insulated).