I use a combination of hitching posts. I have some gorgonians, some acros, fake plants. The plants are easy to clean as Seahorses are messy little critters. They also like to hide in little caves I have ade with the live rock. Seahorses do not like REAL bright liht. They are usually foind in brackish water or in deeper waters. I have a T5 hood on the tank now. They still like to hide. They will come out more. Just no halides