Mike, As it has already been said, test kits are the only way for you find out what's happening in your tank, they are a must. Ralph touched on it in one of his response, but I feel not enough people talk about water flow. If you are wanting to keep SPS, you are going to need a whole lot of flow. How much flow do you have? The other question I have concerns your lighting, how old are your bulbs?, what Kalvin are you running?, how far from surface are you running your lights? And how long are you running them?
Best of luck with your SPS, just take it slow.
Dennis
Best of luck with your SPS, just take it slow.
Dennis