What do i need to start a saltwater tank just for a horseshoe crab?
A horseshoe crab will grow about 25% larger with each molt. Having said that. My own horseshoe crab was about the size of a quarter when I got him, and now (year and a half later) fits into the palm of my hand. I would suggest a tank at least the size of a thirty gallon breeder, but to maintain the saltwater tank it would require florescent lights, a filter with a bio-wheel that moves 350 gallons per hour, and a live-sand bed that is at least three inches deep. As I have mostly invertebrates in my tank, I turn my filter off for twenty minutes every other day to let the food settle for them. Most horseshoe crabs starve to death in tanks. You would also have to keep a close eye on the water. Dehydration increases the density of salt which is the biggest problem with smaller salt water tanks. I love watching my horseshoe crab. It does like to go for a daily swim in the tank, and will skim the surface of the water upside down. Like my son’s tarantula, it stays in hiding and won’t eat for a
