Hello. I have many years of fish keeping experience in both freshwater and marine. I left the hobby about the time skimmers began to catch on and get popular, so my question is, what would be the best setup, (tank size, substrate, filters, ect.,), for stingrays? I haven't decided on freshwater or marine yet either. What is the current availbility of both? Where to buy? What tankmates, if any, for them? I have had a few species of marine rays in the past, but with all the new equipment on the market today, (UV sterilizers, chillers, ect,), just not sure what would be the "best" setup. Your input is appreciated. kyray