Haven't used fertilizer in 3 months and it was a weak solution of Miracle Grow. The new soil I mixed in has no added fertilizer. (That's getting harder to find!) I added the extra perlite because when I dug up the dying plant the soil was hard as a rock. Would perlite add anything else to the mix besides drainage? Any chemical change?
I think I will eventually dig it up and place them in smaller pots to get a very good start over and a final chance at a good life. It gave us so many great years!
Maybe something is living in that pot? It is large, old, plastic, brought in from outside about 4 years ago, and could very house something creepy.