sea horse / reef .... sea horse / reef ??????

[GreenSpottedPuffer]

You can do both but you are very limited on what kind of reef you can/should do with Sea Horses. They need very low flow, so that rules out sps mostly. You could do a planted tank kind of reef with macro and soft corals that don't need much flow like mushrooms, some leathers, ect. Some LPS do fine in low flow too.