im going to be going from a large 2br apartment to a 1br soon. i want to build a stand to hold my 125g and 75g. should i put the 125g or the 75g on top? i have a FX5 and XP3 for the 125g. im thinking building the stand 75" long so that i can put the 125g on top, the 75g on the bottom and the two filters under the stand. what would you guys recommend?