Love this as a topic because I struggled for YEARS to keep SPS. Now I am having more success than I've ever had before and not just keeping them alive, but having them thrive and show the colors you would want them to show.
My biggest tip isn't really a tip from me per se but instead is a tip on where to find some of the best tips:
Only listen to the tried and true experts. And I mean the REAL experts.
I absolutely mean no offense to anyone in the slightest when I say this, as this is just my opinion, but the only people worth listening to are the people growing SPS at scale. I'm talking big, big tanks and aquaculture facilities where folks' income relies on their ability to not only grow coral but keep them healthy, colorful and thriving. (TopShelf,
WWC, POTO, Tidal Gardens, CherryCorals, BattleCorals, etc. Take your pick). I mainly say this because their experiences are much less anecdotal and are much more proven, tested and replicated. These folks take care of 1,000's of individual colonies and frags. Their ability to have thriving (not just surviving) animals is why they are successful and is paramount to their ability to remain profitable. While the real fine details of their methodologies may be much more advanced and specific to large scale environments, the critical pieces can by in large be scaled down to work on any size tank. You'd be surprised just how replicable and simple most of their methodologies are.
I listen to just about every reefing podcast I can get my hands on. Many have real good general reefing information but by far the most valuable in terms of getting care tips specific to SPS is the Beyond the Reef Podcast by Adam Sutherland over at Frag Garage. Highly, highly recommend listening if you are interesting in keeping SPS. He regularly interviews the folks from many of the top SPS sellers in the industry and they spill TONS (and I mean TOOONS) of SPS specific knowledge.
Last thing I would say, keep it simple. There are so many additive products pushed on the
market right now and 99% of them you don't need and will never need. If you are just trying to have some intro level success, stay away from trace element dosing, stay away from fancy bottled additives, and don't go overboard in keeping your tank too clean. You are much more likely to kill SPS by doing too much than not enough.