Well, I have experimented with it and it works for me...so it is up to you if you want to move it later on to the traditional soil media. I just hate gnats indoors and I hated the snails and slugs that always manage to evade the baits at times outdoors, so I opted to find alternative ways to grow mine. I still have a batch of them in soil, and I just do not see any difference really in how they speed up their growth. What I do see is, they love lots of water in our very dry locale. And I love to see the condition of the roots too. However, it is really a balancing act since the container has no drainage..that is why in glass I use clay rocks and I really allow those rocks to approach dryness before I add more water so the roots are not suffocated. I try not to give too much fertilizers on these bulbs..seems once application after the blooms are gone is enough.
It is kind of like growing some orchids, so many ways to grow them..just have to find which one works with your watering and growing habits.
