I'm trying to use the Aquamaxx Magnus. I tried the 9000 series and it couldn't handle the head loss in my system. Marinedepot is working with me to upgrade this to a 12000 but they don't have it in stock right now. When I get that in, I'll be able to use the neptune flowmeter to assess its rate with about 13-15 feet of head loss.
With respect to the L1. MarineDepot gave me the option of any other pump. It came down to two. The Deepwater Aquatics line is also on my list because they have a controller coming out with a 0-10V DC input that can be used with my Apex. The L1 is absolutely not Apex compatible and you will have to resort to using a programmable outlet. I figured if that was the case, then I would go with the Aquamaxx DC 12000 which has exactly the same specs at a lower cost. The Aquamaxx 9000 model is extremely quiet and works great if you only have about 5 feet of head loss.