AHA... I got a response back from JBJ
"The sp-1300 is 18watt with 240gph, the sp-1800 is 25watt with 290gph, and the sp-2500 is 32watt with 530gph. Also any pumps can be used with a protein skimmer, as long as the flow rate is correct. If you have any further questions please email or contact our customer support line and someone will further assist you on this matter."
So far so good
a bit higher power draw than MJ1200 but not too much.