6 sided flowery looking things at bottom of pool

ls6camaro

New member
Jul 10, 2020
1
Mohawk Valley, NY
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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.