Mesenterial Filaments?
 

My two Bowerbankis along with my Scoly have been showing these raised white curly spots for awhile. Originally they would be mostly at night but now they've been out for a few days. Are these filaments or a parasite? I've tried a dip and they go away for a day but then come back. I'm currently running purigen in case it's something in the water. I do have some softies in the tank.

yeah those are messenterals mine puts out those quite often. They can get quite long and will run along substrate inch or two . Any other corals nearby?

There is a cabbage leather about 3” away. Thanks.