Now for me, it has always been the opposite. Every flame angle I get doesn't make it for longer than a few weeks, and every cherib I have ever bought is still alive, one is 4 years, one is 3 1/2years, and my smallest is almost one year. All in different tanks of corse. For the life of me I can't get a flame angle to live. My cherubs I do absolutly nothing special for them.