No moral issue, but performance based. It isn't like we are keeping endangered species (well, mostly). I did have one question for Ron where I quite confused, which he never really answered, when he said that his lighting choice was more for him than the corals. This did not make sense to me since 1). he otherwise does not seem this way, and 2). he has talked a bit lately about adding in T5s which means that he noticed something that the corals were missing (no idea what) and wanted to make it better.
If coral health, growth and color are the main objective, then MH or T5 are going to be the best for the person - heat can be managed and there is no electrical savings in the end for most folks. If they want some of the blacklight, different color all the time, thunderstorms, control them from the couch, etc. then LED are probably going to be the best as long as they are OK with not being able to keep some coral and clams that will not flourish under LEDs. It is possible that a blend of a few different kinds of light might be good. The two are not equal... and after this long it looks like they might never be equal. The argument that "they both can grow coral" is as dumb as comparing a diet of all McDonalds to a balanced diet even though "they both can grow humans."
