Thank you so much for the info!! So stoked to know what they are!Hi i hope for the love of god this link works and everyobe can see it. I bought a largish gsp frag the other week and presume came on that with lots other stuff even though dipped. There tiny like few mm long and act like worms lifting front part body up then back part body lifts up then front...www.reef2reef.com
Here link on thread i started.i thought detritus worms and more experienced guy thinks same.
Mine seed to have exploded in numbers but now i struggle to see any when zoom in on phone at night time.
But i have a silver belly wrasse that literally dive bombs the sand bed then comes straight back up and him and his fishy friends pick off any critters that now in the water coloumn ( very clever) and recently added a copperband butterfly that actively hunting sand and rocks.so these 2 probably keeping numbers down for me