, are in the top 5 of the greatest pumps made. Silent and extremely reliable.
The smallest Mag is the Mag 500. This pump is designed to pump 500 GPH
on a flat plain. You overflow is only designed to handle 300 GPH
. Remember, it is always better to make sure your overflow can handle more flow than what your pump can push out. This is so you don't end up with an overflowed tank and water all over the floor because the overflow couldn't "catch up".
However, you may be able to get away with using the 500 since you did say that your head height is 3 feet and you do have a couple of elbows in the return. According to the manufacturer, at a 4' head height, the Mag 5 GPH
I would wait to get a few more opinions before buying anything...