Actually I have them setup as tiny growing tanks. Each tank is only 10 inches deep and 15 inches wide. They are all plumbed down into one big 40 gallon sump and I have a total of 7 tanks 6 of them 11 gallons per tank and one that's 33 but still all tanks are only 10 inch deep tanks.
This is what I have. Our Local walmart was getting rid of them and doing away with fish and tossing these in the trash. So for a VERY low price of $200 each I got 2 of them both with built in chillers, heat and UV. I wanted to try to use them to raise lower light corals since they are outfitted with the old t-12 lights. I've added into each one 1 100watt 6500k and a 40 watt actinic and 40 watt 10k
mind you these are not mine exactly. Mine have 6 separate tanks above and 1 large tank on the bottom