Space Violet & Pink Princess Philodendron

So I found a space violet at a local greenhouse a couple months ago. Of course I had to have just one. So I picked one up and brought it home. I did not want to re pot it since I figured it was from a decent greenhouse, so it must be okay. Again, my ignorance got the best of me. I have only watered it once since I got, so it obviously is not drying out too well. Then, last week I noticed the leaves were looking wilted. When I touched them, they fell off, they were rotting from the bast of the plant. I didn't want to do it, but it had to be re potted, cut down and *sniff* dis budded. Today it still seems to be slightly wilted, but I am hoping over the next week or so for it to perk up.I decided that one of my plants deserves an award. The "Slowest Growing Ever" Plant. And the award goes to my Pink Princess Philodendron. I have never seen a plant that does so little in my life. I got this early this past summer, at first I kept it inside, but seeing that it did nothing, I put it outside. Well the sun scorched it a bit, and it still didn't grow any. I think in the time I have had it it has put on two new leaves......one per plant as I have 2 plants in the single pot. I am wondering maybe if I should re pot it, because it too is in a mix from the same greenhouse, so maybe an airier mix might help. I also have it under fluorescent lights in my living room to give it a little push. Even though this is a beautiful plant with really lovely foliage, it is so freakin' slow growing that I just want to throw it...lol.