First off, I'd stop using all of those kent products. Almost all of those are made up when you do water changes. The tech-m is good for a splash here and there.

Without a skimmer, I don't think you're going to have much luck with sps. I know there are successfull sps tanks out there that run skimmerless, but I'd bet my last dollar that there are more failures than successful ones.

The acro zooxanthellae get most of their food from photosynthesis. I don't think your pc setup is giving them the energy they need.

I think the lack of of skimming and adequate par are going to be your major hurdles with sps.