Cliff, a 14 gallon isn't really a good size tank for seahorse's. Too small for regular sh's and a little big for dwarves. You would have to keep a very large herd of dwarf's to make that work well. Usually people stay under 10 gallons to keep dwarfs. The only sh that might work would be a pair of breviceps but they are temperate so then you'd have to get a chiller to keep the temps in the mid 60's. So it would be better to get a smaller tank for dwarves or a bigger tank for normal size seahorses.

Alot of people will not use liverock with dwarves because of the pests. I'm going to use some tonga branch since it is not full of holes so it's easy to spot aiptasia and remove any you see. I'll treat it with panacur also just to make sure I don't get hydroids in the tank. Most people will also treat any macro algaes with panacur before they put them in the tank since hydroids can tag along with macros also..