Yes I was actually running 2 24w PCs for months and corals were all fine. Then I decided to upgrade to 3 PCs. Honestly the only difference that I have noticed is growth rates increased but as far as color is all pretty much still the same. I was advised against PCs for some of these corals but I have to say I'm pleased thus far with their performance.
MH or T5 are great but I wanted to keep evaporation (and cost) to a minimum.
This are a couple more FTS showing more of the whole tank. As you can see I have a pinpoint PH monitor hooked up. A very helpful little instrument it is!