I currently have a 29g reef tank an i want to expend a bit into the hobby. I have a 120g (48x24x25) that is currently not being used. I was planning for a lagoon style tank but i am thinking about seahorses now. I would just like to ask a few basic questions. Is the 120g too big for seahorses? I only would want to buy captive bred species, and i am currently looking at hipp. barbouri, hipp. reidi, and hipp. procerus, does anybody have personal experience with keeping any of these species, or have a suggestion for a "good starter seahorse"? If i were too keep seahorses i would really like to try and breed them, so i am also factoring that in with the previous question. I know you are very limited for tank mates with seahorses, but i was also thinking about maybe pipefish, mandarin gobys, and maybe a Tridacna Clam to help break things up, any thoughts? Also i am a little confused about water temperature. If seahorses like colder water, then what about corals other fish, such as a mandarin goby, is the water too cold for them? I have read that hipp. barbouri is often found hanging onto acropora sps, and are found at 6-10m depths, so in this case what is a good temp? sorry for throwing so many questions out there at once, but my mind is more reef orientated and seahorses are still a little foreign to me. thanks.