CYA removal

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ramirez41

Well-known member
Sep 20, 2023
56
Michigan
Pool Size
14000
Surface
Vinyl
I know to remove cya it is cheapest and best to do a partial drain on our aboveground pool. We did the partial with our pool a 6 times before closing it and drained it down a below the return when we closed it. 5 partial drains were only below the skimmer and 1 partial drain was about half way. My CYA is still at 140. No clue how high it truly was last year since I was reliant on the pool store and they never mentioned it, but their tests topped out at 100. This year I am ditching the pool store, chlorine with stabilizer, and bought the taylor k-2006c test kit. I am wondering though if anyone has used the green story global pool and spa filter to remove cya. The reviews are very mixed. I was debating on trying it because we have well water and I am worried about the strain on our well pump and some homes around me are having issues with their wells drying up. The minimum to have water brought in is $500 so that is not an option. Would there be any harm to use it? Has anyone used it with success or tried it and had failure? I do understand if it does work it will be a lot slower than draining.
 

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There are plenty of threads here to demonstrate it doesn't work, except to remove $$ from your pocket.

We all wish there was a solution...
 
They claim it removes 10ppm CYA a week, but my pool is well over twice the size of yours. How does it know ? :ROFLMAO:

That's 2lbs a week for me, roughly the size of the filter.

Then the time. If you start today, you'll hit 40 CYA on July 30th.
 
Multiple drains lose efficiency because you lose new water with the old.

You're between a rock and a hard place for sure. :(

A 50% drain would leave you with 70, much more manageable.

How did you get the 140 # ? Is that a diluted test or a guess ?
 
I did the diluted test. I added tap water to the 7 line, then added pool water to the 14 line, shook it for 30 secs to mix, poured water out to bring it back down to the 7 line, and then added the regimen to the 14 line.

We discovered the cya issue late last season when I couldn't get my chlorine levels to drop and started going to different pool stores. I found a pool store that is ran by an elderly couple and they pointed out the cya issue, told me why it happened. I went home and researched for my self and found my self here.
 
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ramirez41 said:
I did the diluted test. I added tap water to the 7 line, then added pool water to the 14 line, shook it for 30 secs to mix, poured water out to bring it back down to the 7 line, and then added the regimen to the 14 line.

We discovered the cya issue late last season when I couldn't get my chlorine levels to drop and started going to different pool stores. I found a pool store that is ran by an elderly couple and they pointed out the cya issue, told me why it happened. I went home and researched for my self and found my self here.
Click to expand...
Everything the elderly couple were telling me for pool care and wasting money on unnecessary chemicals aligned with what is on here. Except they like to use test strips. They said the machines are unethical and meant to sell you more chemicals.
 
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Shoot, I was Mineral Springed. That's even more expensive than being Baquacilled :ROFLMAO:
 
ramirez41 said:
From experience of others how many more times would I need to drain the water just below the skimmer to get my cya in the appropriate range? I am currently at 140.
Click to expand...

What percentage of your pool volume are you draining when you drop the level to "just below the skimmer"? Five percent? Ten percent?

If it's 5%, you'll need to do 14 drains to get your CYA from 140ppm to 70ppm. If it's 10%, you'll need to do 7.
 
ramirez41 said:
I know to remove cya it is cheapest and best to do a partial drain on our aboveground pool. We did the partial with our pool a 6 times before closing it and drained it down a below the return when we closed it. 5 partial drains were only below the skimmer and 1 partial drain was about half way. My CYA is still at 140. No clue how high it truly was last year since I was reliant on the pool store and they never mentioned it, but their tests topped out at 100. This year I am ditching the pool store, chlorine with stabilizer, and bought the taylor k-2006c test kit. I am wondering though if anyone has used the green story global pool and spa filter to remove cya. The reviews are very mixed. I was debating on trying it because we have well water and I am worried about the strain on our well pump and some homes around me are having issues with their wells drying up. The minimum to have water brought in is $500 so that is not an option. Would there be any harm to use it? Has anyone used it with success or tried it and had failure? I do understand if it does work it will be a lot slower than draining.
Click to expand...
Yes, I have used the Green Story CYA Remover with success—I think. I am qualifying my statement because I am not an organic chemist, and as much as I have looked for any analysis on this product from legitimate experts such as Richard Falk or Robert Lowry (as opposed to someone with simply an opinion), I have been unable to find anything. When I took over care of my 50,000 gallon plaster pool in August 2023, my CYA reading was 187 ppm. I had been told by my various pool care providers that the only way to remove the CYA was to drain the pool and that I also needed to acid wash the plaster or CYA that was supposedly absorbed by the plaster would leach back into the new pool water. Given the expense of those courses of action, I decided I had nothing to lose by trying the Green Story CYA Remover. I put one into one of my strainer baskets and then went about the normal business of taking care of my pool. I used my Taylor K-2006 kit to test my water every other day and I changed to liquid chlorine. I also had my water tested a couple of times a month at my local Leslie’s using their automated test. My CYA steadily dropped over the course of several weeks until it stabilized at about 100 ppm. Elated at this result, I replaced the old CYA remover with a new one and again watched as the CYA reading steadily decreased. Once my CYA reached 50 ppm, I stopped using the CYA remover. My CYA is now down to around 32 ppm which I attribute to draining that occurred when the pool overfilled with rains this past spring. I am concerned that that might be a little low, so I have been using a few of the chlorine pucks to increase CYA. That’s my “lived” experience, as the tautological-challenged lefties would say. Wish I could explain it from an empirical, scientific perspective, but I can’t.
 
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