Hey Edew, Bellina's are beauties indeed and their fragrance adorable. Yours is looking great.
I am not a fan of semi-hydro though, it prevents air reaching the bottom part of the pot.
Here is a good video to talk about the pro's and cons of water culture, just sharing so you can decide what you want to do long term.
Water culture for Phalenopsis orchids: Is it a good long-term growing method? From my perspective. - YouTube
It's not quite semi hydro but it's the same principle.