I just bought a Weipro 2011 from P#tm@rt today and i know that many users are setting the water level up to just under the black band. i am using a sicce indra to power the skimmer but i cannot set the water level to the desired place. no matter how i turn the knob, the water level is still over. it is only when i adjust the pump to 400l/h flowrate den it lowers. can anyone help me as the low flowrate is causing very little turbulence in the reaction chamber.