I am planning a new tank since my current tank has a crack in it. still not leaking yet. but I am watching it. I plan on doing my own stand to save a little money on it. and so it's more stable than what the store brands are. plus they look cheap. I plan on building my own. but since the tank I am looking at I believe is 48 inches in length. Can I build the stand larger than the tank and add a second tank like a 20 long. and then it will give me more room underneath to add a second sump to it andrun one overflow to one sump and a second overflow to the another sump. plus I just plan on running 1 skimmer through out the whole system since it's rated up to 250 gallons. I plan on getting a 120 gallon tank.