The one year mark and then...disaster.
A couple weeks ago my tank passed the one year mark and everything was going perfect! Then, last night, the heater failed to turn off at some point and I didn't notice it all day. Only reason I caught it was that I do my top-offs at night and when I checked the temp, I found it off the chart (86+ degrees).
I put some ice cubes in a freezer bag in the sump to bring the temp down (normal for my tank is 79-80) and I'm praying that I don't lose anything. I had just recently changed out my heaters as well for a new Hydor Theo model and it failed in less then 3 weeks. I think I need to go back to my old Ehiems, they've never failed me.
I think I'm going to introduce that heater to my nice heavy hammer. Work off a bit of frustration and deal some street justice!
"If your wife ever asks how much something was for your tank, just tell her you got it on sale and you had to have it! She'll understand"