Look like this thread was dead long ago, but then this is the primary seahorse thread I can find in this forum.
2 weeks ago, I brought 4 seahorses from aquamarine marine pet. These are remaining stock (1 male & 3 females), the shop keeper want to clear them also.
There are some seahorse lovers interested in my update, so I shifted to this thread.
I put seahorses in my sump tank. Feed twice daily, morning before I go to work and night. I often observe them and adjust the setup.
Attach is my short video, knights of the square table. Pic attached also.
20180224_203426.mp4