OK he says its a 20 gallon tank. Below is an attached pic of it. He says with stand and tank its 45" tall and the tank is 35" accross and 25" deep. Is it a 20 gallon like he says? I cn't find any tank with those same dimensions and he didn't mention the height of the tank but from the picture I think its a 30 gallon and not a 20. What do you think?