Hi, I kept salt several years back but have only had freshwater lately. I'd like to have a marine tank again, and have wanted seahorses for years.... I have an eclipse 3, it's running fresh right now but I could move the betta in it and I am wondering, would a pair of dwarf seahorses do well in an eclipse 3? Do I have to modify it- ie. More lights for macroalgae or gentler filter current? Is macroalgae necessary for seahorses? Thanks for your time.