PH reading low during slam

[poolnj]

Just opened the pool and added too much chlorine before checking PH.

My numbers are
CYA: Doesn't register
FC: 10
CC: 0
TA: 60
CH: 300k

If my actual CYA is really under 30, my shock level would be 10, and if 30, it would be 12+. So I'm either just at shock level or a little lower.

I was expecting my PH to show an inaccurately high reading, but it actually was the lowest reading 7.0.

My pool is not clear and I ideally don't want to wait until my chlorine comes all the way down (even though probably not too long with little CYA) because was hoping on using in the next day or two.

Can I assume that I'm not actually at shock level and my PH is more or less accurate? I'm thinking of raising until it registers to 7.2 and running overnight with the chance that it will balance and clear up, which gives some buffer in case it's really higher based on the FC.

Thoughts?

 

[ajw22]

Don’t worry about your pH.

You need to add 30 ppm of stabilizer CYA using the sock method and SLAM with a FC of 12.

The SLAM Process will not work with 0 CYA. And 10 ppm with 0 CYA is too harsh and can bleach your liner.

Follow the SLAM Process without the shortcuts you are taking.

 

[poolnj]

Tx. I have a DE filter and since the pool is still very dirty, it needs to be backwashed often which I know isn't good when raising CYA. I tried getting liquid stabilizer but all local stores are out and even on Amazon would only arrive next week.

Should I run the filter on recirculate? If so and it really takes up to a week for the CYA to kick in, that would mean I can only start to get it clean afterwards?

 

[PoolStored]

You should filter your pool, even if you have to backwash. It will help filter anything that you end up killing.

We recommend you use DRY STABILIZER. With liquid, you must use the whole gallon, and rinse the bottle multiple times to get it all out. If you only use a portion of the liquid stabilizer, because it does not mix well, you will not know how much you put in. Check to see if anyone around has dry.

Add 5ppm of liquid chlorine daily until you have your CYA. This will keep the algae growth to a minimum.

CYA typically will register within 24-28 hours. If you drop it in a sock and put it in the skimmer for 30 minutes, it typically will dissolve if you sit and squeeze it. I can do 7lbs in 30 minutes. Then you can SLAM at FC 12.

Do not worry about backwashing with CYA, backwash will take very few gallons. 30K is a big pool and it will have minimal impact on your CYA level.

 

[poolnj]

I started with the dry stabilizer and attached a pic of my makeshift contraption.

It was bugging me that it was cloudy because even though my CYA was low, in the past that just depleted my chlorine fast but the pool was balanced a few days after opening. And when I had low PH in the past, it didn't affect it this much.

I've been using the BBB method for a few years and was always able to maintain a crystal clear pool. Pool math is always spot on with the chemicals amounts needed to reach target.

I knew the science wasn't wrong, so I suspected it was something with the filter. Sure enough, I opened it and the entire grid assembly was completely caked with a ton of DE build up.

I cleaned it all and within a few hours, my entire pool magically turned nearly 95% clear and a beautiful blue!