Needle wheel & Volute turn your Dart into NW Orca
 

$50 - needlewheel, volute, Oring, and extended size bolts to turn your exisiting Reeflo Dart into a NW Reeflo Orca. You will get the same air volume and bubbles on the Reeflo 250 skimmers.

You will need to remove the existing bearings on your Dart and insert it into this one.

2" NFPT inlet
1.5" NFPT outlet

http://i123.photobucket.com/albums/o...e/IMGP0707.jpg