You also can get Prodibio and Iwaki (back then during beckett skimmer era, this was a hit!) products there at relatively cheap price.
Anyway bro,
I have a Hong Kong friend who keeps a reef tank at home. You may want to go see his tank too. He's keeping zoas and spses. Are you keen?
I also think you can also get really good eagle eyes there. Place wise, I don't know, gotta reconsult my HK friend since some of the shops there have either relocated or closed down.
But nonetheless with him, I am sure you will have a good time in HK shopping for fish stuff
Anyway, HK wise, it's possible to take corals out. To think my HK friend shipped me some eagle eye frags before. haha
Happy Reefing,
Marc J.