Im working on a project and i need an insulator that can withstand high temperatures. I have tried using aluminum foil to at least help a little bit, but the propane burner is hot enough to turn the aluminum into boxite(or something like that) it gets all discolored and crumbly. It has to be decently flexible and somewhat durable. the progect has a coper tubing coil surounded by a steel case i made out of a paint can, I have a fountain pump runing water through the tubing so i can heat the water. Unfortunatly there are still gaps between the burner and the case. I need something that will fit into the gaps and can wrap around the case to keep the heat in. the burner runs very hot but i dont know how hot it acutaly is. any ideas would be very helpful.. Thank you

Hey guys, i have a project that im trying to do in the front yard.. I want to build a natural rock pondless fountain, that looks like this.. (with only one rock)

http://images.google.com/imgres?imgurl=http://content.costco.com/Images/Content/Product/149077.jpg&imgrefurl=http://www.costco.com/Browse/Product.aspx%3FProdid%3D11179667&usg=__fDvTp3JaZLp0qIdpBda1YJ4UmGo=&h=300&w=300&sz=38&hl=en&start=3&um=1&tbnid=C_WvLL9Ldc1vXM:&tbnh=116&tbnw=116&prev=/images%3Fq%3Dnatural%2Brock%2Bpondless%2Bfountain%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN%26um%3D1

I want to do it cost effective, what will i need? the size of the pump? type of lining? etc?
Thanks! best answer gets 10 points!