Need help with sump/fuge

[Ruth]

Well I have sold my 44g cube so it looks like I am a step closer to setting up my 300g cube.
I need some help in designing a sump/fuge for this thing. I am thinking maybe 3' X 3' but other than that don't really have too much of a clue.
Also if there is anyone out there that would be interested in building this baby for me please let me know. I think I want it built out of acrylic for the weight and ease of drilling if I decide to change setup down the road.
I just know that some of you DIY wizards will be able to come up with something for me.