I am experiencing similar symptoms and am not sure if its my elevated phosphates. Since my major params alk etc have been stable for quite some time. Only fluctuations have been rising po4. Sent off icp test but corals are irritated and I'm trying to bring down slowly. Initially dealt with low nitrate and phosphates. Now sustained above .38 via hannah for several months. From what I have read most people don't have a huge impact from that phosphate level. Had a dino battle that I'm finally out of from low nutrients. No visible nuisance algae either.
