Stlsoldier,
I honestly just started the whole plant thing. I don't think I have had mine long enough to tell if they're gonna die on me or not haha but I will say that my radican sword has had one of its small newly unfolding leaves already shoot up and flatten out to be just like the rest in only 2 days. I got my cabomba a little before that and it was flowering when I got it but has now doubled the number of little white flowers coming off of it. My crypt kinda changed colors on me but I just noticed a new leaf coming up from the middle so I assume its doing well too, perhaps just "crypt rot" as I've read that's common when newly introducing them. I have 4x14watt bulbs on a 29 with a HOB that gives a decent amount of surface turbulance. I use a cheap fertilizer/growth enhancer that I got at my lfs but no CO2 and no substrate.