Looking for input on starting a seahorse tank.

[tim the toolman]

As the title suggests I am looking to start a seahorse tank build in an old floor model television which I had a freshwater aquarium built into previously. I guess the main questions would be
1. Tank size requirements
2. Need for a protein skimmer?
3. Suitable tank mates
4. Is a refugium necessary (i have read they need a pod colony)
Any other comments would be appreciated, as well as info on your own successes.
And yes I will show a build thread as the T.V. Tank comes to life