Hi Finn I also have a CPR SR-6 i wrote them back in March when i set my tank up and Originaly CPR sells a Rio 2100 with these skimmers But you can upgrade to a 2500 which puts out just @ 750 GPH i have switched to a Mag drive 7 =700 GPH and had good results with it. However I did switch to a Barr skimmer on my 150 tank and when i get my 75 gallon tank running i will use the Cpr hope this helps...Jeff
I have a cpr sr-6 skimmer that is powered by a rio2500. I would like to get this out of my sump. What other powerhead has the same air intake and will work on this skimmer?