Is this the correct liquid stabilizer to raise my CYA?

Skenn81

Well-known member
Apr 23, 2018
109
Florida
This isn't the solid vs liquid debate, I am just checking that the chemical makeup of this product I bought is correct and the online calculator liquid section would be valid.

Right now CYA is at 30 or below and I want to raise it up to 50 for the summer season which is starting down in Florida. I say 30 or belowNot worried about it being too high as the constant rain and sun burned / drained enough in the last 12 months to bring it from above 100 when I moved in to 30 now.

15,000 gallons so it is telling me 104oz to raise it back up. I just pour it in the skimmer and check it a day later?
97601
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,397
Laughlin, NV
Yup. 25% CYA and 75% water.

You are best to use the entire bottle. If you let it set, the product will harden in the bottle over time. Be sure to shake well and wash out the bottle mutliple times to get all the product.
 

Skenn81

Well-known member
Apr 23, 2018
109
Florida
Yup. 25% CYA and 75% water.

You are best to use the entire bottle. If you let it set, the product will harden in the bottle over time. Be sure to shake well and wash out the bottle mutliple times to get all the product.
If I use the whole bottle that would be 128 oz, so too much for my pool, right? If it doesn't last and not shelf stable then I would just throw the rest out. Do you pour a bit in, test, then pour in more or should I do it all in one shot. Put it right in the skimmer or spread it someplace in the water?

To the other poster, yes, I know solid is cheaper, but that's not what I am doing here.
 

tim5055

Mod Squad
TFP Expert
LifeTime Supporter
May 11, 2014
10,349
Franklin, NC
Do you pour a bit in, test, then pour in more or should I do it all in one shot. Put it right in the skimmer or spread it someplace in the water?
Calculate how much you need to achieve half of your goal. If you are at 30, calculate what you need to get to 40. Add that by pouring in front of a return with the pump running. While CYA will likely cause no problems, we never recommend adding chemicals to the skimmer as some of them can cause damage.

Wait a day for the first batch to mix well then test and see how close you got to where you thought you should get. Adjust your next dose according to how you testing showed the first dose did. CYA is one of those things we don't want to overshoot when adding if at all possible.

All unused chemicals should be disposed of at your local hazardous waste disposal site.
 

an1vrsy

Bronze Supporter
Jul 10, 2018
138
Rancho Santa Margarita, CA
I’ve discovered when using liquid stabilizer, pouring a pencil stream of it in front of a return that you’ll notice the return will shoot it out/disperse it into the pool. However, no matter how well I aim the pencil thin stream into the return some of the stabilizer will still miss and settle on the bottom. I always then brush the area to disperse that part that missed the return stream. Besides I want to mix it anyway.

The last time I added liquid stabilizer, I also added water (no auto fill) so as the higher stream of water was filling the pool, I used that water stream when I poured in the liquid stabilizer. There was no collected stabilizer on the bottom of the pool afterwards but I brushed anyway.
 

Skenn81

Well-known member
Apr 23, 2018
109
Florida
Okay then I will go add 52 oz tommorow morning, test Thursday, add more according to results and if it's up to 40 or not.

Will add over a return and brush the area shortly after to stir up anything that may have sunk to the bottom.
 

Uncle Salty

Gold Supporter
Feb 3, 2017
292
South Carolina
I’ve only ever used the liquid though not that particular brand the op is showing but I can’t imagine it’s any different. I shake the Crud out of it and just walk and pour around the pool and brush after. The stuff is like pancake batter and won’t mix by pouring in front of a return so you’re going to be brushing regardless and this way it gets dispersed well throughout the pool. Keep shaking as you pour and dip the bottle in the pool and shake again to get all the liquid goodness out.

Salty
 

JamesW

TFP Expert
Mar 2, 2011
16,357
Note that liquid stabilizer is usually monosodium cyanurate monohydrate in the 35% to 42% range.

Monosodium cyanurate monohydrate is more soluble than cyanuric acid, but there is still a substantial amount that remains undissolved.

In any case, it’s probably monosodium cyanurate monohydrate even though they label it as cyanuric acid.

Once in the water, they form the same thing anyway.
 

Uncle Salty

Gold Supporter
Feb 3, 2017
292
South Carolina
Note that liquid stabilizer is usually monosodium cyanurate monohydrate in the 35% to 42% range.

Monosodium cyanurate monohydrate is more soluble than cyanuric acid, but there is still a substantial amount that remains undissolved.

In any case, it’s probably monosodium cyanurate monohydrate even though they label it as cyanuric acid.

Once in the water, they form the same thing anyway.
Yes I believe it’s like 2% cyanuric acid but like you said the end result is the same.
 

Skenn81

Well-known member
Apr 23, 2018
109
Florida
Well the pancake batter was a very apt description, I was not expecting that after all the other liquids used in the pool are like water.

This morning I added the recommended half amount, so 52oz. Poured over the return and as others said some blew into the water and the rest sank down. Used the broom to stir it all up. Looks like it all dissipated. Will check the CYA tomorrow morning and if it's about 40 will do it again.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,802
Northern NJ
I bought the dry or granular and and this stuff does not mix well, even when I mixed it with hot water in a bucket before adding to the pool. Any suggestions on how to get it to dissolve?
Use the sock method. From:


Solid/granular cyanuric acid (CYA) should be placed in a sock and the sock put in the skimmer basket or suspended in front of a pool return. After adding CYA you should leave the pump running for 24 hours and not backwash/clean the filter for a week. Squeezing the sock periodically will help it to dissolve faster. Test and dose chemicals in your pool assuming the amount of CYA added is in the pool according to Poolmath. CYA can be tested the day after it is fully dissolved from the sock.
 
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