Hi all, I was recently doing a web search on water heaters on how to prolong the life of my water heater and discovered that not only should I drain the heater every yr. but also to inspect and change the anode rod every few years.I have a 9 yr 50 gal. GE heater which I purchased in 2001 and have not not done any of these things. so far the heater seems to be working fine. I've been trying to locate the anode rod and base on the parts description in the manual, it describes a magnesium anode with a hot water outlet. I also poped off a large plastic cap off the top of the heater and I see a 1-11/4 hex bolt surrounded by insulation. is it possible that there are two anode rods in this heater? thanks