Yes. At first signs of no plup extension, from any of my millis, I checked all perimeters Alk was super low @ 6 and so was the Mag 1100, but Calc was @ 500+. I believed this swing was due to me changing the media in my calc-reactor. I was useing large pores ARM but switched to the large rock like ARM.
Used Brightwell Products to raise Alk and Mag. I also switch out the calc media to the original stuff I was useing. Took we about a week and a half to get everything settled. Alk 8.5, Mag 1330, Calc 430. It has been steady for the last 5 weeks and I have yet to see any improvement. I think it's getting worse, the tips seem to be deteriorating.