laguna pond pump - its the same base pump that's used in teh Red Dragon and ATB pumps.
I would recommend the laguna 2000 so you can tee off and power your reactors as well. "one pump to rule them all"
http://www.ebay.ca/itm/LAGUNA-PT-346...ht_1211wt_1344
these are VERY quiet pumps and replacement parts can be bought at any pond/major pet store.