Is CH my problem?

[dash]

Practically all summer long, my pool has been cool. I'll take the simple test kit out every other day and check the chlorine and pH levels, and I'll simply just add an amount of liquid chlorine or muriatic acid. I keep leave out of the pool and brush it a couple times a week. Everything had been going great... until a week ago.

I noticed the water wasn't clear, but a little green- I shocked that pool with chlorine, and several days later after shocking and shocking... it's still green.

Here are my numbers from this morning, before I added chlorine:

FC) 4

CC) 1

CH) 450

TA) 50

CYA) 35, closer to 30

pH) 7.5

I honestly can't tell what's wrong. I did a back wash on Sunday, and I'm planning to do another maybe this afternoon or tomorrow. The only number that seems too high is the calcium, but do I just need WAAAY more chlorine???

Help, and thanks.

View attachment 69294

 

[jblizzle]

Not a CH problem.

FC must have gotten too low. Need to follow the SLAM Process process to eradicate the algae.

 

[mknauss]

You need to SLAM Process. Lower your pH to 7.2, use a CYA of 40 (anything over 30 is 40) which makes your shock FC 16. Test and dose every hour until the FC begins to hold.

Take care.

 

[YippeeSkippy]

When you say you "shocked" the pool with chlorine....what kind of chlorine and how much? How often?

Maddie

 

[dash]

Thanks everyone for the SLAM advice.
I think I'll bring the chlorine levels way up and keep them high until the algae clears out. I will update you hopefully in a couple days of my clear pool (fingers crossed).

 

[jblizzle]

Define "way up".

We do not dump and pray.

Follow the SLAM process exactly until you pass the 3 criteria to stop.

 

[domct203]

Thanks everyone for the SLAM advice.
I think I'll bring the chlorine levels way up and keep them high until the algae clears out. I will update you hopefully in a couple days of my clear pool (fingers crossed).

Follow the Chlorine/CYA chart for your SLAM FC level.

[FC/CYA][/FC/CYA]

You will need a FAS DPD chlorine test to properly SLAM Process the pool. Which test kit are you using?