I have lyretails. I started out with 3:1 females and it seemed that the male was sometimes beating them up pretty good. so I decided to add one more. After I added the 4th female, it appears that the male doesn't have enough time in the day to get around to harassing any individual female very much.
The 120 is not coming along nearly as well as I would have hoped by now. For a while it was a comedy of errors, although not really very funny to me. There are no longer any SPS in my 120, although I have a few doing pretty well in the 40 with T5s. Between a magnificent foxface and coral beauty angel, the two of them decided one day to team up and wipe out all caps in my tank. I then had a closed loop i installed leak on me. I had it shut down for a while. Around the same time I purchased the above mentioned anthias and several expensive wrasses and began overfeading the tank. Before i knew it, I had measurable phosphates and nitrates in the tank. I also somehow introduced nudibranches into my tank as well, so there went some of the zoos I had.
For the last several months, I have been trying to leave the tank alone, doing more water changes, trying to cut back on the feedings, and not adding anything much to the tank. The newest puzzle is that I can't seem to keep the alkalinity up in the tank and the calcium is through the roof.
The next venture into SPS (except for the few in the 40) may have to wait until a new house, with a bigger tank, no miracle mud, a phosphate reactor, and a calcium reactor.