My LFS tested the SG in my water and it's identical to what my refractometer reads. I have to see if my LFS carry these fluid for future calibration.
Are you running any GAC? It could be the softies releasing stuff the sps dont like.
GAC: I'm not running any carbon and wasn't aware that it was necessary. Again, I'm relatively new to this hobby and have been learning a ton a day. What do I need to run GAC and are there any particular brand/product that you would recommend? Can I run this carbon together with phosban in my phosphate reactor? Any known articles on this topic as it relates to the reef tank that you may know of?
The OP hasn't made a post in over 4 years. I am certain that whatever the issue was 4 years ago, it isn't an issue now.