Not sure why nobody has replied to my first post, but I wanted to add that I have nixed the hex tank. It didn’t seem as if it would be completely appropriate for seahorses.
So, my next choice is a 45g corner tank. I’m thinking that a wet/dry filter would work best for the horses with a protein skimmer and sump. Does anyone think that I would need any further oxygenation? What about a power head?
Any advice at all would be very appreciated.