I've always read around 130. According to the water folks out here we have been on well water for the past 4 years. It sounds like we are the only area like this. And I've talked to a lot of water districts. Most moved to we'll water about 4 months ago.
All the things I am doing has seemed to stop the coral death. But I still getting cyano everywhere and a constant reading of 4 ppm nitrates when I have always read 0 on the nitrates with the red sea algae pro nitrates test kit. And I haven't changed anything. As a matter of fact my bio load is less than ever. Only 1 small blue tang in the system. 4 wrasses, 1 foxface, 2 anthias, 2 clowns, 2 bengais, engineer goby, and an algae blenny. Not much for a 210 gallon system.