Few questions:
1. What size tank/pond are you planning on running this on?
2. Did you see that the pump draws 1,000 Watts?
The manufacturer of the filter recommends using direct drive pumps, but I don't see why this pump would not work. It definitely looks powerful enough. They recommend using 3" plumbing for this beast with a minimum flow of 5,000GPH and the optimal (max) flow being 7,500GPH.
The pump would cost me almost $250/month to run (I pay $0.34 per KWhr). If you are closer to the national average of $0.11 per KWHr, that pump would cost you about $80/month.
Amazon doesn't provide the specs, but you can see them here:
http://www.halfoffponds.com/patriotkoipondpumpkp1000010000gph.aspx
I can't imagine running a filtration system this large on anything that could fit in an apartment. The filter is designed to handle a koi pond of up to 10,000G. If you are wanting to use the filter even though you know it is oversized for your setup because you got a good deal on it, I would think twice; the monthly operating costs are going to be pretty brutal. Also, in order to backflush/wash the media, you will probably go through several hundred gallons of water. Would this be possible?
I don't mean to sound negative...just want to make sure you know what you are getting into with that monster pump.