氣動水族箱泵房

It's a pump, that looks like a house!
...
Ok that wasn't all too funny I admit. But it really is a tiny pump made for your aquarium! All you have to do is connect one air line to it and then another tube to move water wherever you want. In the tank, to a filter, or onto somebody!
It looks sort of cozy and I've arranged a few in different sizes to look like a village. So far no shrimps have been sucked up into it but the one I'm using is also very small.
I use mine to lift water up to a gravel filter in a pet bottle and it works quite well after a month. The hose got a bit clogged up but that's to expect from regular 4mm air tubes.