i used a 30 gallon long, and a simple filter for it, i put in some of my live rock and live sand with the sand i bought for it, the seahorse who is now residing in it is a tiger tail seahorse very small right now. He was ordered from liveaquaria, but he arrived alivand healthy.
just a day but i put in a few pounds of my other tanks live sand and a few gallon of my other tanks water and a live rock so it is safe