As a Christmas gift my husband decided to get me a tank for seahorses as I have mentioned wanting one. I have ordered some books to read about keeping a tank for them as I know nothing about them other than how beautiful they are. He purchased a biocube aquarium which has yet to arrive. I believe it is 32 gallons. Will this type of tank work for seahorses; is the filtration good enough on these small tanks? Is it big enough? We have had a fish only saltwater tank in the past. We would like to have some coral with possibly small tank mates. Any help & tips would be appreciated.