ok im obviously doin something wrong here.... when i came home from work yesterday i had noticed that the water level in the tank was filled up higher than it was the day before than i noticed that the overflow box had some what lost suction im mean it was still draining down just didnt seem as fast as it was be pumped back in the tank......i sucked the air out of the overflow and the water level went back down to normal...now i just woke up and the same thing so far its been 2 days and each of the 2 days i had to re prime ... any help??? what am i doin wrong??? that little tube sticking outa the overflow box i read somewhere to tie that after you suck all the air out???