Thanks for the advice on the double glaze. I was working on that same idea and came up with what I think should be a pretty adequate solution. I am going to use two 1/4" or 3/8" sheets of plexi separated by 3 1/2" square rods for the center divider. You can see it in the pics below. This should be strong enough to hold pressure but provide a pretty nice insulating barrier between the fish and the PC. I have a plan for the top of the tank. The top of the oil tank is going to be higher then the top of the fish tank and the top of the fish tank will have a seal around it. Hopefully, the oil won't get hot enough for that! I think we'll have some problems with the computer before we can get some fried fish. The plan is for the cables to come out of the top of case. Now, on to the pictures: These are some rough sketchup renders I did. They are no where near complete and the design in my notebooks has been changed several times since this, but this is basically what the tank portion of the case will look like when finished. The black rods in the picture will be clear, as will the tank. The colors are there so the difference can be seen. The rods in the corners of the tank will be 1/4" square, the center three will be 1/2" square. They should help with the structure of the tank. The construction of the rest of the tank is going to be along the lines of the construction in this log. His design is very sound and I figure why reinvent the wheel. Any thoughts or ideas to add? I'm still deep in the design portion of this build and will welcome any advice.