I am setting up a 75 gal. tank with a 30 gal sump. I fell into a sweet deal on 2 blueline pumps on craigslist but since this is my first go with a sump set-up I am a bit wary on what to do. My LFS guy is all about Mag pumps but from what I can tell the external BlueLine will be quieter as well as produce less heat. The pumps I got are the 20HD which is rated at 480gph and the 40HD rated at 790gph. It is only about 5 feet from the bottom of the sump to the tank. I am concerned about the amount of flow I will have. Will either of these pumps work well for me or should I turn around and make a few dollars selling them? Any input would be appreciated.



