I have a 29 gallon tank w/ 3 erectus seahorses. I have a rio wave maker the one that you put on a power head and its goes in a circle for water movment and a 130 watt coralife lighting fixture. I have an Aqua C remora protien skimmer and a refugium for my filtration. The water movement is not exactly very strong, but it is enough to keep colored tip acropora, and " Purple " stag acropora from Live aquaria going healthy. Is there anything I can do to have more SPS corals in the tank without bothering the seahorses?