I use the switched socket adapter to let me use whatever pump I'd like. Works great and gives you many more options.
I've used all manner of peristaltics and powerheads, they all work great (but can pump a significantly greater volume of water, so watch out!). I've even hooked it up to a RO booster pump.. I'm sure I could have pumped 30' or 40' easy with that little brute.
grim