[SPotter]

if you havent looked at this thread yet, you may want to before opening the box. I tried running two L1's on my closed loops and had significant issues with internal temps on the pump. I couldnt get enough pressure coming out of the pumps in the variable speed modes and when I ran the pumps in constant mode @ 100% they would shut down because pump temps. At max I could run them without temp issues was 65% on constant. If you do go ahead and try it out, just make sure you leave yourself plenty of room on the plumbing so it will be easy to switch back to your current pump if you are unfortunate enough to run into the same issues that I had.....I am hoping that you dont!

http://reefcentral.com/forums/showthread.php?t=2543238