So he should try some more difficult corals? That just doesn't make sense.
I would check source water like the others have said. SPS aren't all that difficult compared to other corals, they're just not as forgiving. I would get some of the easy, bombproof sps to start with and see what happens. Get some monti caps, digitata, green slimer and or a couple birdsnest corals and see how they do. Once they start to take off, then look at adding more acropora.
The 2 best pieces of advice I received to keep healthy sps is to monitor alk religiously, and make sure you have the purest source water possible. I check alk EVERY friggen day! I don't skimp on RO production and products as well. Replace carbon and prefilters often and I run 2 DI canisters. One with a regular maxcap DI and a silicabuster DI both from spectrapure. Most importantly - don't give up!