You had the right idea how to measure CYA above 100 before. Use this trick again. Mix equal parts of pool water & fresh water, this will be your test sample. Add reagent and measure CYA than multiply your number by 2, this will be your CYA.
Just want to cry ?
- Thread starter Funinsun1
- Start date
LoneWolfArcher
Bronze Supporter
To test your CYA use half pool water and half trap water. Do the test. Then you double the test result for your result.
Please switch to liquid chlorine only. You'll continue having problems until you.
Please switch to liquid chlorine only. You'll continue having problems until you.
- Jul 21, 2013
- 53,029
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
You have no CL. Deal with that first.
Add 1 gallon of 10% liquid chlorine every day until you resolve your CYA issue.
Record your tests in PoolMath
Add 1 gallon of 10% liquid chlorine every day until you resolve your CYA issue.
Record your tests in PoolMath
Last edited:
- May 3, 2014
- 58,570
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
OP acctually have very high CYA over 100. There is another thread where they were advised to do dilluted test. Once completed we can make recommendation of how much water needs to be drained.
- Jul 21, 2013
- 53,029
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Oooops, Yeah, your CYA is far out of range...... if your water is still crystal clear it is because of luck, I'd say. Your guardian pool angel has your back, but it won't remain so forever.
The diluted test* is what will tell you how far out of range you are. Plug those numbers in to the "Now" side of PoolMath, and then input your desired "Target" numbers (30ppm of CYA) and PoolMath will tell you how much water needs to be drained in total. Whether you do it in one fell swoop or multiple mini drains is your choice. Doing it all at once will use the least amount of water, but you don't want to ever drain lower than 12-18" in the shallow end- this allows the weight of the water left in there to keep the liner from shifting.
You can rent a sump pump from Home Depot and use it. Fastest way and saves wear and tear on your equipment.
Is water particularly expensive where you live?? In some areas of the country its dirt cheap, and others kinda pricey. I have no clue about your area? Your convenience factor is worth it, IMO.
Im sorry you're having to go thru this....
Maddie
*As LoneWolfArcher said- half pool water and half tap water. Use that as your pool sample to run the CYA test again. Double the results. That's how you run a diluted CYA test.
The diluted test* is what will tell you how far out of range you are. Plug those numbers in to the "Now" side of PoolMath, and then input your desired "Target" numbers (30ppm of CYA) and PoolMath will tell you how much water needs to be drained in total. Whether you do it in one fell swoop or multiple mini drains is your choice. Doing it all at once will use the least amount of water, but you don't want to ever drain lower than 12-18" in the shallow end- this allows the weight of the water left in there to keep the liner from shifting.
You can rent a sump pump from Home Depot and use it. Fastest way and saves wear and tear on your equipment.
Is water particularly expensive where you live?? In some areas of the country its dirt cheap, and others kinda pricey. I have no clue about your area? Your convenience factor is worth it, IMO.
Im sorry you're having to go thru this....Maddie
*As LoneWolfArcher said- half pool water and half tap water. Use that as your pool sample to run the CYA test again. Double the results. That's how you run a diluted CYA test.
Hello Friends,
Well i did the CYA test with half fresh water half pool water ..added to the 14 mark.. shook for 30 sec. And still literally a few drops into the small vial .. black spot disappeared.
I thought what the heck... ill add more fresh water to the sample to see if the black spot will show up. Long story short...even adding enough water to over flow the vital...still no black dot visible.
( i know I'm suppose to be trying to NOT see the black dot ... but Im trying to see how much I need to dilute to get anything...hope this last part makes sense)
So I'm beyond perplexed because ive drained the pool twice. ( its still clear and sparkly.. thank you Pool Angel)
Any advise would be greatly appreciated.
Well i did the CYA test with half fresh water half pool water ..added to the 14 mark.. shook for 30 sec. And still literally a few drops into the small vial .. black spot disappeared.
I thought what the heck... ill add more fresh water to the sample to see if the black spot will show up. Long story short...even adding enough water to over flow the vital...still no black dot visible.
( i know I'm suppose to be trying to NOT see the black dot ... but Im trying to see how much I need to dilute to get anything...hope this last part makes sense)
So I'm beyond perplexed because ive drained the pool twice. ( its still clear and sparkly.. thank you Pool Angel)
Any advise would be greatly appreciated.
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Is the pool still drained or did you refill it? Where do you get your fill water from?
Pool is filled back just to the skimmers... expecting I'll have to drain again. ?The water comes from the city. Water is sooo expensive here...after 20k gallons its triple the cost. So I'm hoping to super shock the pool and drain little by little all summer.
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
The problem is that if your CYA levels are that high, then all of the chlorine is not going to be allowed to do any sanitizing.
Try this:
- Mix equal parts of pool water with tap water (put in pool water to 7ml, tap water to fill to the 14ml mark)
- Discard half (squirt out until 7ml is what is left), add same amount of tap water again (back to 14ml mark)
- Discard half (squirt out until 7ml is what is left), add same amount of tap water again (back to 14ml mark)
That will give you a 1/8 dilution of your pool water. Discard down to 7ml again, add the reagent to the 14ml mark, and run the CYA test on that and see if you can see the dot at some point in the scale on that test. Make sure you're in good lighting, like a sunny day with your back to the sun.
Try this:
- Mix equal parts of pool water with tap water (put in pool water to 7ml, tap water to fill to the 14ml mark)
- Discard half (squirt out until 7ml is what is left), add same amount of tap water again (back to 14ml mark)
- Discard half (squirt out until 7ml is what is left), add same amount of tap water again (back to 14ml mark)
That will give you a 1/8 dilution of your pool water. Discard down to 7ml again, add the reagent to the 14ml mark, and run the CYA test on that and see if you can see the dot at some point in the scale on that test. Make sure you're in good lighting, like a sunny day with your back to the sun.
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Also: the only chemicals you are adding at this point is liquid chlorine, correct? No tablets, no in-line tablet feeder, no powdered shock, etc.?
I will do this when i get back home. Thank you
Its crazy because I've drained twice. We did have white slimy mold... but that's been scrubbed off.
The pool looks sooo inviting.
Its crazy because I've drained twice. We did have white slimy mold... but that's been scrubbed off.
The pool looks sooo inviting.
Correct... nothing but liquid chlorine. Everything else has been taken put or not put in.
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Thanks! I want to see if this dilutes the CYA enough for us to get a reading. If not - you have over 800 ppm of CYA (never even heard of anything that high) or the test isn't being run the right way.
Here's a youtube video that shows how to do the test - might be worth a watch just to be sure you're doing it this way.
Here's a youtube video that shows how to do the test - might be worth a watch just to be sure you're doing it this way.
There is some good news in all of this. I did the CYA test right. And also the last four times too... so big high five. ?
Its totally crazy to think the pool is soo clear and sparkly. Ugh ... back to the crying
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
OK, good. Will be interesting to see exactly how high this CYA is! If it is really that high...it's pretty much full water replacement
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Also, just out of curiosity, you might want to run the test on pure tap water, just to be sure something in your filling water isn't throwing the test off....