CYA at 76 should I lower before Slamming.

lucash72

Member
Sep 7, 2021
11
San Ramon, CA
So I'm treating a neglected pool... my neglected pool...
alkalinity is ... 0
PH is about 6.5
hardness is 33
free chlorine at 0.4
total chlorine at about 3.5
CYA at 76 (although before finding this website i added more chlorine stabilizer, so its safe to say its a bit higher now maybe 80+)

I dont have a quality test kit yet so I'm just using a 5 way test kit from home depot, unfortunately this means I cannot test for CYA (the numbers above are from Leslies test).

I imagine the first thing I should do is empty the pool a bit to lower the CYA before dealing with the other issues, however I am unclear on the order of operations. Once I lower My CYA should i balance my PH, Raise alkalinity, increase hardness? Or do I just immediately add liquid chlorine to raise chlorine.

Any advice would be fantastic.
Also where do you recommend I get my chemicals? Leslies is expensive but home depot rarely has what I need.
 

Oly

Gold Supporter
Jun 28, 2017
2,317
Fresno, CA
Pool Size
27000
I cannot test for CYA (the numbers above are from Leslies test).
I imagine the first thing I should do is
Any advice would be fantastic.
You first must not assume your CYA test from L is correct.
Imagine draining your pool only to discover your CYA was actually 40ppm.
Imagine draining 1/2 of your pool only to discover your CYA was actually 200ppm
Get a proper test kit and test your CYA before diving in. Test Kits Compared
 
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lucash72

Member
Sep 7, 2021
11
San Ramon, CA
You first must not assume your CYA test from L is correct.
Imagine draining your pool only to discover your CYA was actually 40ppm.
Imagine draining 1/2 of your pool only to discover your CYA was actually 200ppm
Get a proper test kit and test your CYA before diving in.
Do you recommend a test kit in particular? edit ^^^ thank you
 

Donldson

TFP Expert
LifeTime Supporter
Jun 12, 2009
5,132
NW Ohio
If your alkalinity is actually zero then your pH is actually somewhere around 3.5 or so. That's really really bad for everything the water is touching.

You need to raise your alkalinity to at least 50 ppm, like, yesterday.

If I'm reading your other post right you have a service? Fire them.
 

Oly

Gold Supporter
Jun 28, 2017
2,317
Fresno, CA
Pool Size
27000
I included the link in my edit above.
Also add liquid chlorine (no additives) to your pool ASAP.
Keep your FC above 5ppm until you get a good test kit.
 

lucash72

Member
Sep 7, 2021
11
San Ramon, CA
If your alkalinity is actually zero then your pH is actually somewhere around 3.5 or so. That's really really bad for everything the water is touching.

You need to raise your alkalinity to at least 50 ppm, like, yesterday.

If I'm reading your other post right you have a service? Fire them.
were fired when the pool remained green for 5 weeks, that was about 2 months ago, got the pool clear after dropping mundo dinero on chemicals only to have it turn green again after not checking chlorine for a week. I am going to go get a quality test kit and revise the numbers, like, immediately
 
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Oly

Gold Supporter
Jun 28, 2017
2,317
Fresno, CA
Pool Size
27000
Wise guy? :poke:
Where you live will help us determine your swim season, expected seasonal solar radiation, source water quality, winter severity and even access to quality test kits.
Backyard........:shock: :cheers:
 

lucash72

Member
Sep 7, 2021
11
San Ramon, CA
Wise guy? :poke:
Where you live will help us determine your swim season, expected seasonal solar radiation, source water quality, winter severity and even access to quality test kits.
Backyard........:shock: :cheers:
Oh lololol thought my postal code was shown on here my bad. San ramon Ca. Just bought a tf-100 but gonna go see if i can find any kit that will show CYA so i can determine if i need to drain or not
 

Oly

Gold Supporter
Jun 28, 2017
2,317
Fresno, CA
Pool Size
27000
Your TF-100 will test CYA.
When your kit arrives run all the tests except the OTO, (use FAS-DPD to test FC and CC) then post them here like this:
FC
CC
pH
TA
CH
CYA CYA Testing - Further Reading
Pro Tip......(if your CYA test is 90 or above dilute pool test water 50/50 with tap water, test again and double the result)
 

proavia

LifeTime Supporter
TFP Guide
Feb 6, 2015
2,504
Chandler AZ
Pool Size
12300
Surface
Plaster
Chlorine
Liquid Chlorine
Oh lololol thought my postal code was shown on here my bad. San ramon Ca. Just bought a tf-100 but gonna go see if i can find any kit that will show CYA so i can determine if i need to drain or not
There isn't a 152832 zip code - but there is a postal code with that number in Russia.
Being in San Ramon, CA, yours is probably 94582 or 94583.
Please insert your city, state in that spot as it's important to know when we are offering advice - and most members won't have any idea where you are located if you post your zip code.
 

lucash72

Member
Sep 7, 2021
11
San Ramon, CA
There isn't a 152832 zip code - but there is a postal code with that number in Russia.
Being in San Ramon, CA, yours is probably 94582 or 94583.
Please insert your city, state in that spot as it's important to know when we are offering advice - and most members won't have any idea where you are located if you post your zip code.
Oof i dont know how i biffed that one so badly thanks for pointing that out
 
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lucash72

Member
Sep 7, 2021
11
San Ramon, CA
Oof i dont know how i biffed that one so badly thanks for pointing that out
also I don't think I can change that so... *soviet anthem plays*

ussr GIF
 

lucash72

Member
Sep 7, 2021
11
San Ramon, CA
Hey All,
ya Boiii is back!

So I received the TF-100 test kit today, unfortunately they sent me two 'R-003' instead of a 'R-0871' so I couldn't get a perfect chlorine test done however..

FC - 5+ **Estimate
CC - could not discern waiting for R-0871
pH - <6.8 **less than
TA - 40
CH - 175
CYA - 70 **did it twice pretty confident on that #

however I brought the chlorine up swept daily and ran the filter and I am happy to say the pool is completely clear. I plan on cleaning the filter this weekend. I bought some alkalinity up, but figured I should wait to add it until I hear from y'all. I bought a Clorox alkalinity up on amazon prior to getting advice on here, so I will wait to add it until I get the Okay. I have Ph up from home depot but if you guys have a better product I would love to hear any suggestion. The Cya is high but I figure I can slowly Dilute since it isnt at an extreme level. like run the pump an hour or two once a week for a couple months until it gets to 50 to avoid ridiculous water bills. again thanks for all the help and I look forward to any suggestions y'all have. :)