Pool Opening - Green Water - CYA Below 20

[Richardjoslin]

Hello.

I was going to perform the SLAM, but following the steps, I need to raise my CYA. What product do I use and what is the best way to do it? It is at under 20.

Also, I’m supposed to raise pH before I start SLAM?

Thank you in advance. I appreciate the help.

 

[PoolStored]

What product do I use and what is the best way to do it?

CYA - Further Reading

www.troublefreepool.com

Also, I’m supposed to raise pH before I start SLAM?

Re-read this article. Print it out. Read it three times...GO! Link-->SLAM Process

 

[Richardjoslin]

Thank you. I need to learn to navigate the sight a little better. CYA increase started. I will wait 24-48 hours and test again before starting my SLAM as my CYA is under 20.

 

[PoolStored]

Thank you. I need to learn to navigate the sight a little better. CYA increase started. I will wait 24-48 hours and test again before starting my SLAM as my CYA is under 20.

Add 5ppm liquid chlorine per day until you start SLAM.

 

[Richardjoslin]

Sorry. What would 5ppm calculate to on 14k gallon pool? Or do I put a Target Free chlorine of 5 in the Pool Math app without the SLAM button on to determine how much liquid chlorine to add?

 

[clambert1273]

Sorry. What would 5ppm calculate to on 14k gallon pool? Or do I put a Target Free chlorine of 5 in the Pool Math app without the SLAM button on to determine how much liquid chlorine to add?

Can use that or in the app use the "effects of adding

 

[Richardjoslin]

Thank you. I never knew about that feature.

 

[clambert1273]

Thank you. I never knew about that feature.

It's pretty handy

 

[Richardjoslin]

Add 5ppm liquid chlorine per day until you start SLAM.

quick question. Why do I add 5ppm liquid chlorine before I start to SLAM? I read the SLAM and did not see that step. I am very literal and even though I have had my pool for quite a few years, every April/May I feel like I am starting from scratch with my knowledge and opening routine. That being said, I just joined this site last year so hopefully I will continue to gain valuable knowledge. Never too late

 

[clambert1273]

quick question. Why do I add 5ppm liquid chlorine before I start to SLAM? I read the SLAM and did not see that step. I am very literal and even though I have had my pool for quite a few years, every April/May I feel like I am starting from scratch with my knowledge and opening routine. That being said, I just joined this site last year so hopefully I will continue to gain valuable knowledge. Never too late

They were saying to do that while you were waiting to start the reasoning is that normal FC loss can be 2-4 so 5 per day will help cover that & keep any algae from getting worse

 

[ajw22]

If your pH is 7.4 or less there is no reason the RAISE your pH before the SLAM Process.

The SLAM Process works best starting from a low pH. Start with whatever your low pH is.

 

[Richardjoslin]

I just tested my FC level for my OCLT as part of the SLAM I am in the middle of. My FC was16 vs. SLAM Target of 24 for my %) CYA Level. Should I put in 115 oz. of bleach now as my Pool Math says or no? I just questioned adding it now because I don't want to mess up the OCLT. I added 1 gallon of chlorine at about 3pm today.

 

[FlappyLipps]

OCLT should be done at sundown and sunup.
The only thing that eats chlorine in the dark is algae.

Perform the Overnight FC Loss Test (OCLT)

The Overnight Chlorine Loss Test tells if the SLAM is finished or if you need to start a SLAM. This article says how to do the OCLT.

www.troublefreepool.com

 

[PoolStored]

OCLT should be done at sundown and sunup.

To be clear, OCLT should be done AFTER sundown and BEFORE sunup. You should run your pump for 30 minutes before each sample is taken.