I bought a hammer from a nice and seemingly very knowledgable guy who had a 15 year old 180 gallon reef. I am new and my Biocube 32 is now 4 months old but things have been going well and my parameters have been stable. The bottom of the hammer, which he had in his substrate is covered in these tiny feather dusters. Will these remain on the hammer? Will they stay small? Do they pose a potential problem? Should I remove them?



