Hi all, I have always wanted i bigger tank and now i can get it. At first i wanted a 55 gallon for some time but i fiquered that bigger is always better right? So i got a quote at my local fish store for what a brand new 75(48x18x20)($177,on sale), 90(48x18x24)($302), and 125(72x18x22)($412) would cost. Now naturally i would go for the 125, but the width is all the same for all three tanks, so is there really all that big of a difference in what TYPE of species i could keep? And is the extra $130 for a 90 gallon really worth the extra 4 inches high? Also as far as filtration goes i was thinking 2 AC110, and 1 rena XP3 would be sufficent for each of the 3 tanks, am i totally wrong? Well thats all for now, and I look forward from hearing from all you.