Hello! I hope you're all doing well. I am new to the reef keeping hobby, and currently have just two tanks set up. I am slowly adding coral to my vertical 6 gallon nano reef, and the toadstool leather coral really caught my eye, and my clownfish and anemone shrimp I feel would really appreciate it. However they can grow quite large in just a few years. By chance are there any species or types that stay relatively small? If not, what kinds of coral have similar appearance while still being beginner friendly?