Reef Octopus does it again!!! They improved their existing NW, DNW and BH skimmer pumps to produce higher air intake.
See table bellow for details:
*Orca Int is same as NWB-xxx, and Orca Ext is same as DNWB-xxx.
Here's the 2010 model OTP pump picture showing the Pin wheel impeller:
Impeller picture:
Skimmers that run the new pump:
NWB-110 - last shipment as the new pump already!!!
DNWB-110