My camera is broken, but we (roommate and myself) did it to his NW-150. As NASO says... it rocks. just messed with the venturi last night, and it is making some SUPER fine bubbles. all we did was took one impellor off, put 3 layers of PF4 on it, and then put the needlewheel back on and mini-ziptied all of it together. it was maxing itself out due to the venturi being too small. opening that up a bit with some larger tubing really seemed to help. just waiting for some of the oils to wear off to keep the foam head up, but it's definitely promising...