Pool opening - green algae ?

[skoum]

Hi TFP,

Currently slamming for pool opening.
It was a pitch black swamp with all sort of life in their so I had to empty and refill.

I was wondering what this green line was at water level? Super hard to get rid off even with a metal brush? Can it be mustard algae?

Last log :
FC : 14.5
CC : did not test, slam not finished
PH : 7.2 before slam
TA : 80
CH : 200
CYA : 30

Thanks!

 

[mknauss]

I doubt it is algae if you are in SLAM. Have you tried Vitamin C tablets on it? See if it changes color.