Wow--thanks for all the responses! I'll give it a go this way - I like the idea of splitting the flow (could add some extra current to the tank as well), and thanks for letting me know about potential damage to the pump.

One other question-I have heard that many of the Tilapia you can buy out there as fry or very small are actually sterile, and you can not make breeding pairs out of them...is this true? Anyone know of any good cheap sources for a bunch of these fish (either in SoCal, or that will ship here?)

Thanks again everyone!

Can't wait to get it going!

Jason