GreenStory Global Cyanuric Acid

[JamesW]

 

[JoyfulNoise]

It’s basically an ion exchange resin with granular activated carbon … it’s not going to work. Chlorinated water destroys ion exchange resins and the resin+GAC is going to pickup everything in the water.

Once again - science misapplied in the pursuit of profit.

 

[JamesW]

Basically the same stupid idea as CuLator, in my opinion.

Chelok is Periodic Products’ patented series of chelating polymers which are the result of more than two decades of
biochemical research and development.

Rather than using contaminated wastes with chemical precipitants or ion exchange resins, these water insoluble polymers adsorb dissolved heavy metals, which can be easily filtered to separate the metal-containing polymers.

The recovered metals in this process can increase yields providing additional economic and environmental benefits.

Since Chelok chelating polymers retain their metal-binding ability after metals have been recovered, the polymers can be reused.

https://periodicproducts.com/wp-content/uploads/2022/09/Chelok-Sell-Sheet.pdf

 

[JoyfulNoise]

The question to ask is how does it specifically pickup the cyanurate anion? Ion exchange resins are charge specific and don’t discriminate between which ions get attached to it. The main factor that determines how the resin operates in based on concentration differences. This is how standard cationic resins work - the resin doesn’t care if it’s a sodium ion or a calcium ion attached to it. What drives the exchange is the fact that you wash the resin in a super concentrated brine solutions and so the sodium concentrations is thousands of times higher than the calcium concentration. This forces all of the calcium out of the resin where it is replaced by sodium. Then, when you run normal water through it, the calcium concentration is higher than the sodium concentration and so the sodium leaves the resin while the calcium is attracted to it.

In an anionic resin, the same rules apply. So in pool water you have three major anions - chloride (Cl-), carbonate (HCO3-), and cyanurate. The chloride concentration is pools is usually 10 times higher than the others and the cyanurate is roughly equivalent to the carbonate concentration.

So how exactly is the resin going to differentiate between the cyanurate and the chloride when the chloride levels are so much higher?

It doesn’t. And so that resin is likely to absorb mainly Cl- ions and give off OH- anions. The cyanurate will exchange at an amount proportional to its relative concentrations.

 

[JamesW]

According to the lead research scientist (A graduate of ASU I might add) you need to use specially tuned magnets that clamp on the pipe and charge the CYA molecules with a frequency that is identical to the resin, which makes them lock together.

Don't forget to also add a magic sponge and a copper pipe in your other skimmer for extra super duper effectiveness.

 

[JoyfulNoise]

According to the lead research scientist (A graduate of ASU I might add) you need to use specially tuned magnets that clamp on the pipe and charge the CYA molecules with a frequency that is identical to the resin, which makes them lock together.

Don't forget to also add a magic sponge and a copper pipe in your other skimmer for extra super duper effectiveness.

I bet he figured that out while hanging out with Pom squad on the campus quad when they were working on their tans … I always imagine their discussions must be incredibly deep -

 

[AUSpool]

It’s just another attempt to solve a problem that shouldn’t exist in the first place.

Activated carbon doesn’t work with passive flow.
Melamine complex is non specific in terms of which anion it attracts and there is way more chloride ions.
The melamine complex can cause staining - they sell other products to fix that.

But the kicker. They say it removes 10ppm CyA per week. Just ignore the modern international standard measurement units. In my pool 10ppm CyA is ~200gms of dry CyA, that’s just over 3/4’s of a cup. There is no way in hadies that little pouch of carbon will absorb 200gms or 3/4’s of a cup of dry CyA.

And even if it could, for those that are up in the +200ppm range thats 10 or more packets which would have to be north of $300-400 worth. A drain and refill would be more cost efficient and actually work.

 

[rosabar]

Over in this thread Pool Opened: High CyA (147 ppm) and FAC (15 PPM) the OP mentioned using a CYA filter from Leslie's. It was pretty easy to track down and they are kind enough to even include the SDS link on their website

CYA Remover | GreenStoryPoolandSpa

End chlorine lock and remove cyanuric acid (CYA) from your pool quickly and effectively with GreenStory Global's CYA Remover. No need to drain your pool! Save money, time, and WATER!

www.greenstoryglobalpoolandspa.com

SDS

Their claims don't sound trustworthy, such as claiming it will remove 10 ppm CYA per week and omitting any limit to how much CYA it will remove. I was wondering if some more chemically minded people might want to weigh in on whether there's even the tiniest bit of potential in the polymer listed or if the thing is nothing but an $80 placebo.

I just reach my safe levels using this product. It does indeed reduced it by about 10-13 ppm per week. Im in a location where draining isnt practical or possible so this was a great solutikn. Took some time but im glad I stuck with it.

 

[Donldson]

It does indeed reduced it by about 10-13 ppm per week.

Based upon what kind of testing? How big is your pool? What was your starting CYA and what was your ending CYA?

EDIT: Just for those who stumble across this thread looking for information on the product, the above reviewer joined the site at 7:52, posted their glowing review at 7:55, logged out at 7:56 and has not returned since. When this happens it often is someone who sells the product trying to muddy the water with fake reviews. Even if this review is genuine, the user did not feel it necessary to offer anything to back up the claims nor stick around to answer questions. So if you're considering this product, please keep all of that in mind when deciding how much weight to give such reviews.

 

[AUSpool]

I just reach my safe levels using this product. It does indeed reduced it by about 10-13 ppm per week. Im in a location where draining isnt practical or possible so this was a great solutikn. Took some time but im glad I stuck with it.

Geday rosabar and welcome to the TFP and the forums.

If you are needing to reduce CyA and draining isn’t practical then it would be best to switch from stabilized chlorinated products to liquid chlorine to avoid high CyA.

If you follow TFPC you simply won’t need products like this.

How do you come up with 10 - 13ppm? A CyA test result with 1ppm resolution isn’t possible with home or store testing.

 

[Katodude]

I must have all that magic stuff in my pool. I am just going to start a service. Pool water exchange. Take as many gallons of reduced CYA water and dump your high CYA water in my pool. Pay me less than those other magic potions.