H&S, Iwaki and some china brand pump is cheaper in HK. They have this wonderful street with all the LFS in one area. If you are a serious aquarium lover it is a heaven. I get to be in HK often due to work so it is lucky to get chance to see them often.
Was with my wife in HK and in exchange for my $1300 plus H&S, I have to get her a $1000 plus LV bag in return. can PM me if u like to find out more abt the shop there.