Sorry for the delay: The under the sink pump is the Liberty Pumps 404 automatic drain pump 1/3hp.
Right now the return pump is a blueline 55 and a 45 is running the manifold. Originally we had a 70 on there, but the Elos overflows are rated for such low flow, we took it off. We still have the 70 btw if you are interested, it was run for about 3 weeks and is fully cleaned and ready to go.
Thanks Mike. That's the same pump I am ordering as well. So good to know your having luck with it. I guess it holds up to the saltwater.
I will let you know about the pump also. I know the DD overflows can handle 700gph each, so 1400 there and another 700 to the frag tank. That 70 might just be perfect.
Thanks again.