High CC reading during baquacil to chlorine conversion and yellow staining

kateinvt

Gold Supporter
Jun 2, 2019
17
Vermont
Hi again.
I am still trying to get my chlorine reading to 15ppm, following PoolMath instructions. today i reached 14, which is the highest yet. I had the same reading (11) at bedtime as I did this morning, so that seems like progress too, in that the pool retained chlorine for the first time. I am still using brite stix in the skimmer and occasionally shock with turbo shock. I noticed today that the white plastic steps going in to the pool are getting stained yellow. Is this because of the huge quantity of chlorine? Or another imbalance? Ph measures 7.3, CYA 30, and total alkalinity 88. The pool is about the same color as my spring lawn, or maybe a little bit more aqua. Pump is going 24/7, brushed and vacuumed daily. The pool is in full sun most the day.
 

Mr Bruce

TFP Guide
Mar 24, 2014
2,438
Greenville, SC
I looked those "Brite Stix" up. Triclor + Copper Sulfate pentahydrate. I think I found your staining.

Solid chlorine products should never be left in the skimmer anyway.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
22,059
San Dimas, CA (LA County)
Kate, how did you determine you needed to get to 15 FC?

If you're basing it on your CYA level, you keep moving the goalposts because those brite stix contain CYA. The higher the CYA, the higher is shock level. The ingredients are Trichloro-s-Triazinetrione: 93.5%, Copper Sulfate Pentahydrate: 1.5%, Other Ingredients: 5%, Trichlor adds CYA and the copper stuff is bad news. If it gets to a certain level, you will see big blotchy stains on the pool walls and blond swimmers will get green hair. Poolife TurboShock is calcium hypochlorite. It's going to leave behind a bunch of Calcium that you may not need or want.

The yellowing is probably from Iron in the water. It can be dealt with AFTER the algae is all gone.

To get rid of the algae,I suggest you try aSLAM Process exactly as written. If you haven;t already, also read ABCs of Pool Water Chemistry and How to Chlorinate Your Pool - Trouble Free Pool
 

kateinvt

Gold Supporter
Jun 2, 2019
17
Vermont
Kate, how did you determine you needed to get to 15 FC?

If you're basing it on your CYA level, you keep moving the goalposts because those brite stix contain CYA. The higher the CYA, the higher is shock level. The ingredients are Trichloro-s-Triazinetrione: 93.5%, Copper Sulfate Pentahydrate: 1.5%, Other Ingredients: 5%, Trichlor adds CYA and the copper stuff is bad news. If it gets to a certain level, you will see big blotchy stains on the pool walls and blond swimmers will get green hair. Poolife TurboShock is calcium hypochlorite. It's going to leave behind a bunch of Calcium that you may not need or want.

The yellowing is probably from Iron in the water. It can be dealt with AFTER the algae is all gone.

To get rid of the algae,I suggest you try aSLAM Process exactly as written. If you haven;t already, also read ABCs of Pool Water Chemistry and How to Chlorinate Your Pool - Trouble Free Pool
Sorry- I didn't clarify- i'm converting from baquacil to chlorine. Instructions say to get to 15ppm
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
22,059
San Dimas, CA (LA County)
Sorry- I didn't clarify- i'm converting from baquacil to chlorine. Instructions say to get to 15ppm
Actually, my mistake. I didn't look and see which room this was in. So you can skip the SLAM article.

The other points are still valid, though. You need to watch how much Calcium and CYA you add and you don't want copper.
 
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