Disappearing CYA

[vinnygnj]

Janet,

Thanks for the reminder!

There was some mis-communication on my part ... I dropped the PH to 7 for the stain remover and then brought it back up 24 hours later to 7.6 and hopefully locked it in with baking soda so it should stay for a while.

Thanks again!

Vinny

[chemicalbalance]

Trichlor is the wrong product for this problem.

Go to Sams Club and buy the big three pack cases of 1.5 gallon jugs Clorox.

In Western PA they cost $7.50 per case.

SHOCK YOUR POOL WITH CHLORINE BLEACH UP TO ABOUT 15 ppm at night.

Do this a couple of nights in a row. I have an inground pool and had the same problem you are experiencing with CYA loss.

It took me about 50 gallons of bleach over a two week period to fix it. This problem stems from not consistently maintaining an appropriate chlorine level.

You simply have to burn the ammonia out of the pool. It will take time but your pool will come around. I would not add any CYA till you get the chlorine level consistently stablized.

Also, all this bleach is going to send your alkalinity through the roof. You should aerate during the entire process to keep your water churning.

[mbar]

THis happened to me at the beginning of this swim season. I opened to a swamp, and got the water cleared up pretty quickly with bleach, but had an awful time holding the chlorine overnight. I put in stablalizer, to get it up to 30, and kept adding bleach to take it back to shock levels everytime I could test. It took a good 2 - to 2 1/2 weeks for it to hold chlorine overnight. I don't even know how many gallons of bleach I used Even though the water looked crystal clear, and there showed no cc, it still needed lots of bleach to get the water to hold the chlorine overnight. My water has been fine since

[aylad]

Trichlor is the wrong product for this problem.

Go to Sams Club and buy the big three pack cases of 1.5 gallon jugs Clorox.

In Western PA they cost $7.50 per case.

SHOCK YOUR POOL WITH CHLORINE BLEACH UP TO ABOUT 15 ppm at night.

Do this a couple of nights in a row. I have an inground pool and had the same problem you are experiencing with CYA loss.

It took me about 50 gallons of bleach over a two week period to fix it. This problem stems from not consistently maintaining an appropriate chlorine level.

You simply have to burn the ammonia out of the pool. It will take time but your pool will come around. I would not add any CYA till you get the chlorine level consistently stablized.

Also, all this bleach is going to send your alkalinity through the roof. You should aerate during the entire process to keep your water churning.

I disagree. Without CYA in the water, then most if not all the bleach she adds during the day will be lost to sunlight. I stand by my advice to go ahead and add the stabilizer since it takes a little time to completely dissolve. The poster has already stated that she is keeping her chlorine levels high usng bleach during this process, so delaying the addition of CYA makes no sense. Also, adding bleach to a pool does not necessarily raise total alk, and even if it did, aeration is not going to lower it. Acid lowers the alk, aeration raises the pH without an accompanying increase in alk.

Janet

[vinnygnj]

It seems that the chlorine is being maintained. I put bleach in this morning and went out for the day. I came home and after a day of some sun (I think) and rain it was well over 5 (based on the color) using a Taylor K-2005 kit.

I left it to see if in the morning it is above 5 or not. If it is I will dilute the amount to get a more accurate reading if not in goes more bleach.

My PH took a dive yesterday after adding the stabilizer and at this point it's at 7.4, so hopefully I'll be in the clear and things will start working the way they used to!

I do have a question though about the amonia - chlorine and amonia are supposed to combine for CC - I never got CC in my pool. I would imagine that after a night of killing and combining with amonia that the CC would be through the roof in the morning - I don't think my pool had a lot of amonia in it.

Thanks!

Vinny

BTW, I am a he, not a she ... how many Italians named Vinny do you know are shes? LOL!!!!

[vinnygnj]

I think the problem is solved!

After testing the water this morning, the chlorine was at around 5, I added some more bleach and in the NJ hazy sunlight the chlorine level was still above 5.

I only added 4 lbs of stabilizer and by my calculations (13, 000 gallons) it should only be at about 30 to 35 (unfortunately the store ran out of testing reagent) if it's all disolved. I would imagine at the rate I was losing chlorine before adding the stabilizer that the chlorine is going towards killing the algea now, if any is alive. I did add some more bleach to give the existing chlorine a boost. Hopefully my pool will go back to normal.

Thanks for the help!

Vinny

[aylad]

Glad it's starting to clear up for you. If you add your chlorine at night, then retest in the morning before the sun has a chance to hit the pool, you'll have a more accurate idea of whether your chlorine is holding or not. Keep brushing daily, and keep your filter running to get all the dead algae out.

Oh, and sorry about the gender mixup--somehow, in reading your username, it stuck in my mind as "Virginia". Sorry!!

Janet

[vinnygnj]

Thanks for all the help!

This morning I tested the water and it appeared to be above 5 PPM. I didn't have time to dilute the sample but I was happy to see it high.

I came home today and took a sample and again it was reading 5 PPM. I was able to dilute the sample to 1/2 and it was between 2 and 3 PPM. I think the algea is dead as the sun was shining all day.

I have been brushing and couldn't understand why the algea kept coming back. After taking a few weeks of readings in the beginning of the season and having the same readings I do things automatically and was putting chlorine in at night assuming that it was lasting until the next day. I guess it's never too late to learn something!

Thanks again!

Vinny

PS: I really wasn't upset about the she thing.