Dogpack, I too am new to clivia, so I'm no expert. But looking back at your pictures, it looks as though you repotted your plants. Compared to those in your 1st photo, the pots you are now using are way too big. This would create a situation where the medium stays too wet, especially if it's peat based. And that leads to root rot. As Brian mentioned, your medium must drain freely. Clivias hate wet feet. That coupled with incorrect watering can cause the problems that you're facing. I live in zone 8 on the east coast where we get lots of rain, so my medium has to be free draining since I keep mine outdoors. I bring them in before frost and keep them in the garage where they rest until they start growing again. I hope this helps somewhat.
