The dimensions are around 24"x12"x18" I believe. I wanted to get two percula clowns, six line wrasse, and a candy cane pistol shrimp and yellow watchman goby pair. I doubt the tank will be large enough, but let me know what you guys think. If it won't work what should I take out or replace? It's going to be a nano reef tank and I'm fairly new to salt water. Thanks.