I also ordered this china knock-off of the Do!Aqua music note diffuser to be used on the 60-F. This was my first time gambling from ordering overseas... we'll see how it is. But IMO, the Do!Aqua version of this is a piece of diffuser art in itself... I'm hoping this is just as good at a fraction of the price.
I ALMOST got one of those! I'm starting to consider going with the inline one though...
My subwassertang isn't bothered by the addition glut in my fluval 6g or the 10g planted shrimp/fish tank...actually gave a couple handfuls away to a local planted tank buddy...