I don't know if this is the correct forum, but I have something growing from (what looks like to be) the gasket just inside of my pool skimmer.  I found it last spring when I uncovered the pool, removed what I could see, but today saw it again when I uncovered a portion of th pool to check my chemical levels.  It is growing from the same place.  I took a picture to Leslie's Pools this morning but he had no idea what it was or how to get rid of it.  Can you assist, or point me in the right direction?  Thank you.