Hello- i have a small 10 gallon tank - just recently got a new purple sudachrome fish and just noticed lots of these white tube like things coming out of coraline rock at bottom of tank- they are also all throughout my live rock- doesnt seem to move at all- they do have an open end like a tube? i cant find a pic anywhere that looks like it, tried looking at tube worms but i dont think so...seems to have appeared very suddenly. any ideas??
