Right now my tank is FOWLR
so this isn't a problem with coral toxins, my hands seem to get a bit itchy after putting my hands in the tank or even when putting hands in freshly mixed water. I don't seem to get any bumps or anything but I do get some little red dots on my hand. I've never had an issue with real ocean water, I'm not sure if the salt mix is just irritating my hands since towards winter they start to get a bit dry and artificial salt mix I would assume is a bit harsher than ocean water? Does anyone else get this?
You can see some little red dots on my arm from holding my hand in freshly mixed salt water for about a minute.