I have a Sicce PSK 2500 pump on my Reef Octopus skimmer and it just quit working the other day. When I plug it in I can hear it come on and feel the magnet grab but it won't spin. Is there anything I can do w/ this or is it just dead? The impeller is fine and I don't see any other damage.

My second question is I have two mag 9.5 pumps sitting around not being used. Could I use one of these to replace the PSK opposed to dropping $100 on another PSK. I think the PSK is rated at 660gph and the mag is 950?? Would that be an issue?

Thanks