Hi dogpack, I am not sure if the gel beads will work with your Dracaena Janet Craig, but you can certainly try, as long as you will not feel too bad if it will not take it..maybe try to mix it with hydroton rocks so the roots have more oxygen around it? I am just a little wary to use this method if the plant is already in obvious distress.
I am also nursing a Dracaena Janet Craig right now, using semi-hydroponics, the container has two holes about an inch from the bottom to serve as drip line, so when I water the plant excess water will flush out and there would be some water remaining below the drip line. So far my plant has created her roots, there are no leaves yet, but the cane stem has some green so I am thinking there is still hope. It maybe just taking its sweet time since it is still winter. I am hoping it will be much improved as real warmer weather sets in. And since I got lots of water gel beads, I thought of adding just a little inside the container, hoping it will help in hydrating the roots even more. It is just in a bright room, no direct sunlight. So keeping my fingers crossed my experiment will come out good with this one.
Good luck on your plant!