Thanks for the info. So why would I need a pair of them?most silent would be a pair of eheim 1260s or 1262s. cheaper, but not as quiet would be a mag 12.
I really like what I am reading about those pumps. I really only want to have one pump, and that will be silent. I guess what I need to figure out is how I am going to do my returns and decide on what size. That entire story about how to make my drains so they are not so loud arty:Eheim 1262 (900 gph) - $165.00
DC-12000 (3170 gph) - $279.99
DC-10000 (2853 gph) - $239.99
One of the Wavelines will cost you less than 2 Eheim pumps, save you an electrical outlet, space in your sump and be more than enough flow even splitting it off to two overflows and you can control the flow rate since it is DC powered.
The Eheim pump is proven performance. The DC pumps are the new kids on the block and have been typically selling out at most online retailers fairly quickly. All of your big online stores recently got their shipments in over the past couple of weeks.
They make a DC-8000 which may work just as well and costs even less.