I got a cpr bak pak 2R almost three weeks ago. The night that i got it , it had already collected some stuff in the cup. But now that i've had it 3 weeks, i have emptied the cup once, even then it could have gone a day or two withouth being emtpied. since i emptied it last weekend, it has hardly collected anything, less than half a cm. A guy I know said his Aqua C remora's cup has to be emtied almost every two days. Is my skimmer working right? It all seems ok, but its not collecting anything in the cup.