I compare Mariculture vs Aquaculture with Tank Raise/Tank Breed vs Wild Caught Fish. IME aquaculture SPS are more forgiving than mariculture ones. Mariculture is very similar to wild caught, so they required a little more attention than aquaculture in other words they are a little harder to please, they require a lot more patience to see results and growth than aquaculture, and let's face it, we all want to see our SPS grow fast!! Are they more prone to RTN than aquaculture ones, I don't know, but I can tell you that it will take at least a month before you can see the colors on mariculture corals once you get them, and if you see one you like at your LFS, ask them how long that coral has been there, you will be surprise by the answer, one of the reason we are seeing more and more aquaculture SPS this days, plus is good for the environment and we can prove the world that we can sustain our hobby without harming the reefs around the world. Just my 2 cents!