Ive been reading up on it and talking to people im ready I didnt get the ray yet im preparing too I did alot of research i plan to do 50% water changes a week and getting a tank bred stingray.
50% is not near what you need in wc weekly. A ray produces up to 5x more waste then other fishes. I recently moved my two smaller rays from a 540L tank i was growing them out in. I have a big 160L showerfilter, one120L moving bed sump and one eheim 2260 on that tank an still i changed 80% twice a week in that tank.
Have you seen a ray thats 30-35cm wd? Its a massive fish

