calcium overdose!

[heifinator]

My Doser got plugged in to the wrong apex port and ended up dumping 500ml of calcium supplement into my tank overnight. I just caught it before having to drive to the airport to leave town! I am trying to find someone local to run over to my tank and do a water change and add some alk to balance it out some. This is a healthy sps tank with a lot of coral in it. Tank was fairly cloudy this morning from the calcium. Corals had pe and didn't look like they had any issues yet. Any recomendations or ideas as to how horrible this was in reality. Equated to an inverse from about 420 to 520ish.

 

Thanks.

[MikeTR]

that's gonna piss somethin off. I would do a larger than normal water change with regular instant ocean salt to get it back down a bit. Only salt I know offhand that would be readily available with params low enough to do something. You only need to come down about 50ppm.