Testing chlorine and color remains pink

[Beh162]

I just got my tf-pro kit and I first tested my CL and pH
pH 7.5
Cl didn’t register yellow at all, it was orange.
I then attempted the chlorine drop test and I was up to almost 21 drops and it was holding pink the whole time, so I didn’t wanna continue in case I was wrong or something wrong.

My salt shows 3500 on aquatrol
And 3000 on a salt strip

 

[Mdragger88]

How many scoops of powder? & did u use a 10ml sample? If so you only made it to 10.5 fc you need to keep going until it is clear.

 

[Husky25]

I just got my tf-pro kit and I first tested my CL and pH
pH 7.5
Cl didn’t register yellow at all, it was orange.
I then attempted the chlorine drop test and I was up to almost 21 drops and it was holding pink the whole time, so I didn’t wanna continue in case I was wrong or something wrong.

My salt shows 3500 on aquatrol
And 3000 on a salt strip

21 drops is 10.5 ppm. The block only goes up to 5.

Do the FC test again to the letter of the instructions and add enough drops until the solution runs clear. Divide that number by 2. What is your CYA? If it is at the recommended leave for a SWG 10.5 is not awful in that it shouldn't bleach a liner or something.

 

[Beh162]

How many scoops of powder? & did u use a 10ml sample? If so you only made it to 10.5 fc you need to keep going until it is clear.

Says only 1 scoop to 10ml

I retested and added 53 drops giving me 26.5

 

[Beh162]

21 drops is 10.5 ppm. The block only goes up to 5.

Do the FC test again to the letter of the instructions and add enough drops until the solution runs clear. Divide that number by 2. What is your CYA? If it is at the recommended leave for a SWG 10.5 is not awful in that it shouldn't bleach a liner or something.

53 drops so 26.5 and CYA 90ppm

 

[magiteck]

SLAM level for a CYA of 90 is 35ppm (FC/CYA Levels), so you're below that meaning the pool is still fine and save to swim in.

You are wasting chlorine (cell life) running that high though, so either lower the SWG output or decrease the run time. Target FC for a SWG with your CYA is 6ppm.

 

[Beh162]

ETA- what confuses me is reading the Chlorine/CYA chart it suggests for my CYA (90) my target FC should be between 4-6 and mine is 26.5?

 

[Beh162]

SLAM level for a CYA of 90 is 35ppm (FC/CYA Levels), so you're below that meaning the pool is still fine and save to swim in.

You are wasting chlorine (cell life) running that high though, so either lower the SWG output or decrease the run time. Target FC for a SWG with your CYA is 6ppm.

My output is at about 70% running around 6-8 hours a day

 

[Rancho Cost-a-Lotta]

Have you added other sources of chlorine to your pool? Did you recently complete a SLAM? Did you just turn down the SWG?

Your unit produces 12 grams of chlorine gas per hour. That converts to about 10 ounces per day. If my math is correct, running 70% for 8 hours would raise your FC by about 2.2 ppm daily.

 

[Beh162]

Have you added other sources of chlorine to your pool? Did you recently complete a SLAM? Did you just turn down the SWG?

Your unit produces 12 grams of chlorine gas per hour. That converts to about 10 ounces per day. If my math is correct, running 70% for 8 hours would raise your FC by about 2.2 ppm daily.

Didn’t add any chlorine or slam. Just added salt and running SWG

 

[mknauss]

Your other thread - When to add Cyanuric acid to new SW pool it was recommended you add 3 ppm FC worth of liquid chlorine to the pool while waiting on your SWCG. Did you not do that?

 

[Beh162]

Your other thread - When to add Cyanuric acid to new SW pool it was recommended you add 3 ppm FC worth of liquid chlorine to the pool while waiting on your SWCG. Did you not do that?

Nope just the CYA, I lucked out and was able to get a swg from a local shop and had it up and running

 

[magiteck]

Do you use a solar cover? If I keep my cover on often times my daily FC usage is only like 0.5ppm. If the pool is covered most of the time and the SWG keeps going the FC could trend up.

Just guessing as there’s really only a few possibilities:
1. FC consumption is lower than expected for some reason.
2. Your pool volume is smaller than estimated.
3. SWG output is higher than expected.
4. Another form of FC is being added to the water. (and you’ve ruled this out).

 

[Mdragger88]

Are you letting 1 drop fall per second? If you wait too long between drops it will get pink again thus you will be adding too many drops & coming to a result higher than actual.

 

[Beh162]

Do you use a solar cover? If I keep my cover on often times my daily FC usage is only like 0.5ppm. If the pool is covered most of the time and the SWG keeps going the FC could trend up.

Just guessing as there’s really only a few possibilities:
1. FC consumption is lower than expected for some reason.
2. Your pool volume is smaller than estimated.
3. SWG output is higher than expected.
4. Another form of FC is being added to the water. (and you’ve ruled this out).

I do have to add more water to my pool and I just realized my pump timer isnt working properly. I set it to run last night 11p-3a and I got up at 5:30 and saw it was still running. The clock showed 2a. So I def have to see what’s going on there, it’s a 2 week old salt cell lol (aquatrol)

 

[Husky25]

Just an aside, At 26.5 ppm FC, your pH measurement probably cannot be trusted.