I am assuming you mean StingRay by S.Ray. First you need a large tank, in my opinion 72"x36" minimum for the smaller species and some males, 96"x48" for the larger females, 300 gallons or more. Second you need good filtration, there is allot of different options for filters, both DIY and professionally made ones, i would suggest spending some time in the filtration section of the forum. Personally I like pressurized sponge filters and bead filters with DIY bio ball towers. With rays heaters must be shielded, inline, or in a sump, rays will burn themselves on unshielded heaters in the tank. If your using sand you need to make sure its a sand that won't irritate the rays disk.
I am sure there are some other things but those are the big ones. People usually run into trouble keeping rays when they try to put them into small tanks or are lacking filtration.