my vaccuum has a big entrance hole, but the other hole for the muck to get to the tubing is so small i don't think most of it goes down the drain! i'm always thinking i'm just stirring it up and i dont want to "poop up" the water that my 6 little Panda Corys are in.
any good suggestions for a good quality vaccuum?? it can't be too big bcuz i need to use it on not only the big tank but also on a 5 gallon and a 2.5 gallon and it needs to get around the plants.
any suggestions would be greatly appreciated.
Sandy
