So my mother and I were watching Finding Nemo last night, and after a few glasses of wine (not me of course!;D), she started talking about a saltwater tank again. Jumping on the rare opportunity, I joined the conversation. When talk came around to seahorses, I explained that they were difficult to care for and needed to be by themselves. She gave me a pouty face , and stated like a small child that she wanted them anyway. Now, as I lay about in my room and ponder how difficult exams will be tomorrow, a sudden longing for seahorses has come into my mind I knew this was coming, for when has my mother ever wanted anything to do with my hobby? So now the questions... Is it true that they need not be kept in any aquarium larger than 10 gallons due to their slow pace? If I get a 20 gallon sump, would it be easy enough to maintain water quality? How many horses should I get? I have already done saltwater research and know how to cycle a tank accordingly, though I've never actually tried it myself. As always, any assistance is greatly appreciated!