So lots of pump questions lately, I figured I'd pull some pumps off the top of my head for sizes 24-36 that I've seen people run. This is based on other people's results, as I've only tried 1 pump on my 30" body... Also, these are in sump pumps.
24 body:
Good: Flow around 900-1000 gph
Mag 9
Better: Flow around 1100-1600 gph
Mag 12
Laguna Max-Flo 1350
Jebao dc6000 (setting 5/6 or 6/6)
Sicce Syncra 5.0
Other DC pumps...
30 body:
Good: Flow 1200-1600
Mag 12
Laguna Max-Flo 1350
Jebao dc6000 (setting 5/6 or 6/6)
Sicce Syncra 5.0
Better: Flow 1700-2400 gph
Mag 18
Laguna Max-Flo 2000gph (7500lph)
Laguna Max-Flo 2400gph (9000 gph)
Jebao dc9000 (setting 5/6 or 6/6)
Fluval SP4
Other DC pumps...
36 body:
Not as much info here for me. This is where you see some people starting to run the external pumps
2400-3???gph
Mag 24
Laguna Max-Flo 2400gph (9000 lph)
Potentially Laguna Max-Flo 2900gph (11,000 lph) although haven't seen this run yet on a 36 body.
DC12000 pumps
Also, I want to say that the new ecotech pump with it's high head pressure ratings will probably be a great pump for 24's and 30's.