Hi, I am getting a custom build shallow tank with the following dimensions: Width 180cm x Height 45cm x Depth 53cm (71" x 18" x 21"). Does anyone think 45cm is too short for the height? Are their any obvious problems i will run into with this type of setup? I want to house all types of Corals so dont want to find i have limited what i can put in the tank. I plan on having a small amount of Live Rock so there should be a fair bit of space. Thanks!