I got the single duck bill one... once used for my FW fishes.. Very irritating the thing kept on spining... too much water movement liao... now dunno the thing throw where liso...
I juzt fed my fishes garlic juice soaked food... after a few hours the water become very cloudy but the fishes are okaie... no breathing prob and etc...
Huh... cheong wat... everytime i got into any forum or chatroom alway like that one wat... cannot stop typing.. hehe.. kinda of a habit...somemore now holiday... everyday on net...