Strange debris film on surface

[Pokot0]

Hello,

I have recently started taking care of my pool in a new house I jut moved in. I found a very old water with crazy high levels of CYA and high levels of CH that I will need to address.

==========================================
Pool
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Build Type: Plaster
Volume: 30000 gallons
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Latest Test Result Summary:
FC: 2.6 (2 minutes ago)
CC: 0.1 (2 minutes ago)
pH: 7.4 (36 minutes ago)
TA: 120 (36 minutes ago)
CH: 620 (36 minutes ago)
CYA: 282 (36 minutes ago)
==========================================

This morning I found a strange film of debris on the surface only. Water is reasonably clear otherwise. There is a fire in the area and I don't understand if it's just debris from the air or something else.

Does anyone recognize this? (picture attached)

Thank you

 

[ajw22]

Welcome to TFP.

Looks like dirt or ash blown into the pool.

You have a pool net to skim up some of it and examine it?

 

[Pokot0]

Welcome to TFP.

Looks like dirt or ash blown into the pool.

You have a pool net to skim up some of it and examine it?

Yes, It's really fine and so hard to skim up. But it's gone today and most likely dirt or ash like you said. Thanks for the help!