Hello, I have a Palmer's Blue Milli that has been in my tank for about 4 months. About a month ago the polyp extension has gotten very poor, so bad that they pretty much don't come out at all. In the time around when it started getting poor, nothing had changed that I was aware of. My tests were reading pretty steady at: Ca 420, 7.28 dKh, Mg 1260. I have since started raising the dKh, but if it was happy at these numbers before why wouldn't it be now? I am looking for troubleshooting ideas and general conditions that give the best PE. Thanks