Help please. It didnt look like this last time

It has now turned from brown to green. Im about to test again
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Last summer before close my cya was between 30 and 40. With the new water added and a couplw backwashes in going to assume its around 20.

I know I will need to add some but I want get a handle on what the chlorine demand is before messing with other things.

Im going to shoot for a 18ppm level to maintain. During this clean up. Its possible that my cya is lower then 20 but more FC its not gonna hurt...
 
6:00am

FC 21
CC 2

Tested at 5ml

Added half gal at 12am

Made it thru night without a backwash.

Gonna attempt manual vac today. Not a lot of large debris. Tons of finer debris/waste mostly in center from circulation effect.

Edit: Smells very bleachy. Can tell the bleach is doing its thing. Smelled like a compost pile in the beginning.


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11:30am

FC 17
CC 1

Added 64oz 8%

Brushed walls and floor again

Think my CYA could be lower then 20

Adding borax later to boost PH in preps for CYA addition.

All depends on if backwashing slows down. I normally add thru skimmer. Might revert to sock at return method.

Testing CYA later.
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