So yesterday my pulsing Xenia patch was noticeably "smaller." I ran tests, 0 on all three nitrogens,
pH 8.2, Phos -0, KH 179, Calcium 400-420 (this was about an hour after turning on lights.)
SG was 1.025 and temp was 79.
I did a 20% water change this morning with no improvement. The only thing I did out of the ordinary was add a package of Chemi-pure. It's so shrunken that the "hands" barely pulse.
One other thing that might be a factor is my longhorn cow was stuck to the bottom of a powerhead on Tuesday of last week. I moved him to a hospital tank immediately, and am aware that they can release toxins when stressed, but other inhabitants look great. And the Xenia did until Saturday morning. I've added Poly-Filters and activated carbon, the other inverts look happy as a clam (no pun intended), but the Xenia still looks like I just turned the lights on all the time.
A REALLY unlikely factor is I have been coating my new stand with polyurethane in another room in the house and the odor is noticeable in every room inside. But I've polyed my hardwood floors throughout the entire house and not had an issue in my tanks. Any ideas or advice appreciated.