6 sided flowery looking things at bottom of pool


New member
Jul 10, 2020
Mohawk Valley, NY
My first post. Above ground pool. Just getting it going this year. It’s cloudy and can’t see the bottom. While skimming the bottom I came up with these things. Any idea what they are? Look like 6 sides flowers? Thank you. My TF-100 kit should be arriving today and I’ll probably be posting numbers later and asking for help on that too.