Got my March pump running! This is a March 893-04 pump. It's tiny!. It's a 12V pump with a head of 10.5' and 167 gph at 1'.
This pump move lots more water than my PondMaster 250 at half the watts! However, it was way too loud. Now I have it running at 7 volts. At this voltage it's moving a little less water than the PondMaster but it's only consuming less than a third of the watts. It's also about as quiet as the Pondmaster, now that it's at 7 volts.