Thanks for the info Roger.  I picked up a 6080.50 today.  Those are some strong magnets!
A couple of observations, the stream bracket does not click into place as noted earlier somewhere in this forum, but the setup does seem secure.  Also, I can not mount the stream as high as on the rail system because the bracket slides down a ways into the magnet holder and magnet can only be mounted as high as the bottom of the brace around the outside of the tank.  I thought this might be a problem with my sand bed but I have it positioned ok now and will be fine tuning it over the next few days.
Thanks again, Jason.