i just got a 220 gallon and a 180 gallon. the 180 will be a sump for the 220 and another large tank im building. do to limited space i need to stack the tanks the 180 will be on the bottom and the 220 will be on the top the 180 needs to be 1 us foot off the ground and bothe tanks are 2 feet tall there needs to be a gap in between the two tanks so i can can get into the filtration. i was just looking for some help on the desighn and would this be possible never built a stand but im pretty good with this kinda stuff eny comments or sugestions would be awesome the tank will be a salt water set up by the way. thanx