I have an observation and a question about goni care. Over the years I've kept 4 of them of various colors. I lost the first one rearly into the hobby when my casualty rate was pretty high, so, fine.
The last three separate instances, they did really well for 6 months or so, and then one morning it wasn't fully open. Next day just dead. All other SPS and LPS just fine. A year later try again. Again grows from a golf ball to a baseball over several months, then dead in two days. Repeat. Mystified each time.
What would you consider gonis to be especially sensitive to?