Hello my name is Crystal. I currently have a 46 gallon now front fish only tank that I have had set up for the past 2 years, and now have branched out with a 32 gallon tank that has been set up for 4 months that will be a seahorse tank only. I have live sand in it with about 30lbs of live rock. Using a fluval filter and heater. I would love to take the course on seahorses ASAP.