haha.. i would normally hear people who do comm tanks would get their aros from the same batch.. like 10pcs.. chucked them all into a minimum of 8x2.5x3 or bigger..i had to save up money and only get to buy piece by piece and mine arent even the same breed.. cant afford an xb yet..
plus since mine isnt from the same batch, you get to see the largest at about 10inches and the smallest around 4-5 inches.. luckily the chili doesnt even bother to chase the smaller aros..