Hello, I resemble caught some sea horses at my local beach and wanted them in my tank but once I have acclimated them and put them in they would spin around at the bottom of the tank and roll around in the sand and than die in one hour and I wanted to know what is going on with them, all my Parameters in my tank are stable and it is low flow and has many types of macro algae for they can grab on to so can someone please tell me why are my seahorses dying???