Good pump for Berlin skimmer??
 

I'm running a Mag 7 right submersed, feeding my Berlin Skimmer on my 150g. But the impeller broke and the cover. I used a cover and impeller for my Mag 3.5 and its working, but not as well. I want a NEW skimmer, but can't afford one. Also need new sump to fit new skimmer. Any reccomendations on a submersable pump that would work well? It needs higher pressure. I was running it T'd off my sump return, a Little Giant 4 but there wasn't enough flow/pressure to run the venturi well enough :(

I should really juts break down and but a new, better one, but am oficcially unemployed now so have to watch funds.