Well, it is not that it is a "tight" squeeze.. the baker's rack that is there right now is 18 in. deep. The deal is that you can hang over the baker's rack shelf if you need to and you can't with the tank. Plus, it would be by our table and we want to make sure that chairs would not scoot back into it. The chairs have never hit the baker's rack -- but this is a fish tank -- the kids are going to be curious! (That is why it is not going in their rooms! )
Here are pictures of our kitchen now -- remove the baker's rack and put in a tank:
(BTW -- that nasty deepfryer is in the second picture -- it is sitting on the counter in the opposite end by the sink -- right behind my crockpot

)
Oh and one last thing -- perhaps you can see why I am pretty set on a WHITE stand for my tank. Bummer is that white ones cost a mint!