OscarFL, I have a post on a diffrent forum of my 240gln if you want to check it out. The thread isn't the best quality but it shows the basics of the whole setup, sump, water changer, and all with lots of pics.
http://board.fishchannel.com/
Look in the general fresh water. The thread is dust shark habbitat. It's a newb site that is part of FAMA and IFM network and I posted it there so newbs could get a little insight on there developing addiction.....LOL..... I also like helping newbs start in the right direction.