I personally feel that caring for dwarf seahorses is not as difficult as many make it out to be, though they are not for the average keeper. The first major aspect to their success is a small aquarium. Fully grown, these guys are barely larger than a quarter. I keep the temp at 72-73 degrees, salinity at 1.022, and pH at 8.0. Ammonia, nitrate, and nitrite as close to zero as possible, if not zero. They also require a specific diet of live (and enriched!) baby brine shrimp. I feed twice daily, with the shrimp enriched with Selcon for 30min, and set up hatches every three days. The small tank helps keep the food concentrated and them well fed. Though, due to a small aquarium and frequent feedings, you really have to be on top of water quality. I do water changes every two weeks, and find myself constantly cleaning the filter and siphoning debris from the tank.
Basically, with time, dedication, and patience - once you get yourself on track with something that works for you and the horses, they are basically 'care free'. I believe they are the most intriguing of fish species and some of the most rewarding aquatic creatures a person can own. I spend hours each week enjoying them which outways the constant care and amount of time they require.
