Hey Randy, I am having a hard time with my SPS the last few months. Seems like all of my pieces are developing STN and are not recovering. All of my other corals (softies, zoas, chalices) seem to be doing fine, but my SPS keep dying a slow death. What's weird, is that they all look great with nice PE. I am pest free and all of my parameters are in the proper ranges. A friend of mine thinks I should get my water tested from a professional company to see if anything weird is happening. I wanted to get your opinion though, before I waste any money on something like that. Please help (if u can).....thanks!