The pump doesn't go into the reservoir does it? Or does the tubing just sit in there? Tubing inside the bucket, to the pump, from the pump the tubing goes up and into the tank. The tank is 30" tall. So I guess if I have the pump on the stand of the tank, it goes up 30" and then all I have to do is put something under the bucket so that the pump is on top of the bucket 30" or below