Lately, many of my beautiful mushrooms have detached from their base colony and have floated away, often underneath the reef. This isn't just a "spawning", it's an outright "shedding". My parameters are perfect with the exception of my nitrates at 20 ppm, but that has never affected them this way. I have yet to see "anyone" picking at them. Any thoughts? Any nutrients or trace elements that could help or hurt the situation? Thank you.