Hello, I just got a 13 gallon saltwater aquarium this past weekend and I have a young clownfish. As of right now, I have 10 lbs of live sand, and about 13 lbs of live rock. I wanted to add some plants in there just to add some more places for my fish to swim around in as well as for scenery. Are there any plants that the clownfish prefers? Also, are there certain plants that help with the "ecosystem" at all?