#2 The element itself should not rust, they are not mild steel. The face of the element will rust if you don't prevent it somehow. Water heaters use an anode. You could also use JB-Weld over the top of it (making the installation permanent). Also take a look into POR-15 "POR-15 is completely inert when fully cured. It gives off no chemicals or vapors."
"People should not be afraid of their governments. Governments should be afraid of their people." - V
Secondary: Shady Lord RIS, Water to Barleywine, Pumpkin wine, burnt mead
Kegged: Crappy infected mild
Bottles: Apfelwein, 999 Barleywine, Oatmeal Stout, Robust Porter, Robust smoked porter, Simcoe Smash