persistent bug

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Joined: Sun 29 Sep, 2019 20:14
My Pool: small concrete infinity edge

persistent bug

Postby pdb747 » Sun 29 Sep, 2019 20:42

I have uploaded a picture (above) of a very persistent bug in my pool.
Fully grown it is about the size of a small finger nail. It mainly sits on the pool edges and has a hard shell. It moves through the water with little 'wings'.

Can anyone please help me identify it and more importantly how to kill it?

I have tried shock chlorine, an oil film and even emptied and re-filled the pool! It keeps coming back. Augh!

Thank you,

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