Can’t get FC right

[Backyard_pool-boy]

Good morning!

First time posting. Not sure how the signature thing works so: 30k gal, chlorine, plaster painted with epoxy.

-Had our pool deck resurfaced and haven’t been able to get FC to stay up since.
-Lately have been adding ChlorBrite, but have used shock 73 and liquid chlorine previously as well.
-Cleaned out filters and filter housing yesterday. Reading 15 on PSI gauge now, was 20-22 before.

Please see below for test results and chem adds. Thank you in advance for any help!

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Test Results 05-17-2022 @ 07:12 AM
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Free Chlorine: 0.4
Combined Chlorine: 0.4
pH: 7.0
Total Alkalinity: 120
Calcium Hardness: 270
CYA: 40
Temperature: 81°F
CSI: -0.48

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Chemical Addition 05-16-2022 @ 08:30 PM
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+ 32 Ounces of Dichlor

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Test Results 05-16-2022 @ 07:36 PM
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Free Chlorine: 2.6
Combined Chlorine: 0.6
pH: 7.1
Total Alkalinity: 130
Calcium Hardness: 260
CYA: 30
Temperature: 83°F
CSI: -0.33

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Test Results 05-16-2022 @ 05:09 PM
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Free Chlorine: 1.0
Combined Chlorine: 0.8
pH: 7.2
Total Alkalinity: 120
Calcium Hardness: 260
CYA: 28
Temperature: 81°F
CSI: -0.29

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Chemical Addition 05-16-2022 @ 02:43 PM
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+ 32 Ounces of Dichlor

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Chemical Addition 05-16-2022 @ 12:28 PM
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+ 32 Ounces of Dichlor

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Test Results 05-16-2022 @ 12:04 PM
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Free Chlorine: 0.4
Combined Chlorine: 0.8
pH: 7.4
Total Alkalinity: 120
CYA: 26
Temperature: 77°F
CSI: -0.12

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Test Results 05-16-2022 @ 08:22 AM
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Total Alkalinity: 110
CSI: -0.01

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Test Results 05-16-2022 @ 07:51 AM
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Free Chlorine: 0.4
Combined Chlorine: 0.6
pH: 7.6
Total Alkalinity: 130
Calcium Hardness: 260
Temperature: 74°F
CSI: 0.07

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Chemical Addition 05-15-2022 @ 07:59 PM
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+ 1 Pounds of CalHypo73

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Chemical Addition 05-15-2022 @ 03:17 PM
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+ 2 Pounds of CalHypo73

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Test Results 05-15-2022 @ 02:46 PM
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pH: 7.6
CSI: -0.02

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Chemical Addition 05-15-2022 @ 12:42 PM
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+ 78 Ounces of SodaAsh

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Test Results 05-15-2022 @ 11:50 AM
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CYA: 35
CSI: -0.51

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Test Results 05-15-2022 @ 11:39 AM
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Combined Chlorine: 0.8
CSI: -0.49

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Test Results 05-15-2022 @ 11:37 AM
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Free Chlorine: 0.4
CSI: -0.49

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Test Results 05-15-2022 @ 11:32 AM
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Calcium Hardness: 250
CSI: -0.49

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Test Results 05-15-2022 @ 11:21 AM
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pH: 7.1
Total Alkalinity: 100
CSI: -0.64

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Test Results 05-15-2022 @ 11:09 AM
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pH: 7.1
Total Alkalinity: 100
CSI: -0.64

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Chemical Addition 05-15-2022 @ 09:32 AM
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+ 128 FluidOunces of Bleach

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Chemical Addition 05-15-2022 @ 09:31 AM
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+ 5 Pounds of SodaAsh

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Test Results 05-14-2022 @ 04:21 PM
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Free Chlorine: 0.1
Combined Chlorine: 0.6
pH: 6.9
Total Alkalinity: 78
Calcium Hardness: 173
CYA: 20
Temperature: 79°F
CSI: -0.95

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Chemical Addition 05-14-2022 @ 10:56 AM
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+ 10 Ounces of SodaAsh

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Test Results 05-14-2022 @ 10:45 AM
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Free Chlorine: 0.2
Combined Chlorine: 0.4
pH: 6.7
Total Alkalinity: 68
Calcium Hardness: 159
CYA: 20
Temperature: 72°F
CSI: -1.31

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Chemical Addition 05-14-2022 @ 09:00 AM
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+ 128 FluidOunces of Bleach

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Test Results 05-07-2022 @ 06:58 PM
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Free Chlorine: 0.2
Combined Chlorine: 0.6
pH: 7.2
Total Alkalinity: 85
Calcium Hardness: 156
CYA: 20
Temperature: 52°F
CSI: -0.91

 

[AK-]

Welcome to TFP.

Are those test result from pool store testing? We refrain in giving advice based on pool store results because they are not know for being reliable (see this thread as example).

You are going to need a good test kit to test on your own you can use either a TF-100 or a Taylor K-2006C (the former is more affordable).

Regarding your signature: Create Your Signature - Further Reading

 

[Backyard_pool-boy]

Welcome to TFP.

Are those test result from pool store testing? We refrain in giving advice based on pool store results because they are not know for being reliable (see this thread as example).

You are going to need a good test kit to test on your own you can use either a TF-100 or a Taylor K-2006C (the former is more affordable).

Regarding your signature: Create Your Signature - Further Reading

Thanks. Some of the early tests were Leslie’s, the last couple are mine though. We have a Taylor K-2006C kit.

 

[AK-]

You have been adding about 5ppm of chlorine every day, what would likely be fine if you were starting from at or above the minimum for you CYA level (see FC/CYA Levels).

How the water looks like?

If it looks crystal clear then try an Overnight Chlorine Loss Test.
If it is cloudy, green or with visible algae then you will need to SLAM Process.

What is your fill water source?

 

[Backyard_pool-boy]

The water is a bit cloudy, but I can see the bottom and it is continuously getting better. I guess will try the SLAM process. Thanks.

Filled with water from a hose.