for I don't know how many years, probably a decade or two, I've looked at the Eheim Quick Vac online and wrote it off as a gimmick that wouldn't work in a Discus tank, besides, they were horribly expensive last I looked years and years ago. But for some reason I saw it online in an ad at almost half the price I remembered it being, and with my fish in transition between tanks I thought I'd pick one up and try it out.
Wish I had got one sooner!
It's completely submersible (up to 3 ft which is more than I need) and I've found it not only easily picks up the biggest Discus turds, but it also cleans small particles you don't really see at the same time. So now, with the BB tank, every time I see a turd all I need do is get my handy dandy Quick Vac and suck that turd out of the tank and wash it down the drain. It uses a very fine but strong mesh and is easily cleaned.
So no more waiting for WC time, and no need to setup the syphon and start it up.
Very handy and highly recommend :D