I just tested with the block and chlorine was between 1 and 2 and PH is 8.2. Every time I test, even if the chlorine is perfect, the ph is high. i have an swg. I have added dry acid and afterward… ph still high.
New pool owner what next
- Thread starter armorco77
- Start date
- Jun 22, 2014
- 47,854
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
For now, add some liquid chlorine. Your SWG cannot increase FC as quickly as you need to be at the moment. I would ensure the FC is somewhere between 5-7 ppm. AN FC of 1-2 ppm is much too low (algae). When you test the FC, use the powder & drops from your TF-Pro. The block viewer only gives you "total" chlorine and that's not accurate enough at this time.
As for the pH, the rate of rise depends on things like amount of aeration in the water, the TA/pH of your fill water, and your pools TA. What is the pool TA? To lower the pH, we recommend muriatic acid. It's fast and very effective. Dry acid adds sulfates which can (over time) be harmful to your SWG. Use muriatic acid to lower the pH down to about 7.4 this time.
Next time you post, consider posting all of your numbers so we can make an accurate assessment.
FC
CC
CYA
PH
TA
CH
As for the pH, the rate of rise depends on things like amount of aeration in the water, the TA/pH of your fill water, and your pools TA. What is the pool TA? To lower the pH, we recommend muriatic acid. It's fast and very effective. Dry acid adds sulfates which can (over time) be harmful to your SWG. Use muriatic acid to lower the pH down to about 7.4 this time.
Next time you post, consider posting all of your numbers so we can make an accurate assessment.
FC
CC
CYA
PH
TA
CH
ok… right now, how much chlorine do I add? I need to get some Muratic acid. I thought the dry acid was best for vinyl pools.
pool math doesn’t tell me how much chlorine to add based on cc levels.. only fc levels.
cdadams1223
Silver Supporter
- May 9, 2023
- 187
- Pool Size
- 13000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite Pro (T-15)
You have an 8400 gallon pool. In the Pool Math app, go to “Effects of Adding”, use the drop down to note the % chlorine you’re adding, and it will show you how much to add to increase it between 5-7ppm.
I will post all those levels when I have more time, but for now how much chlorine should I add? Thank you for your help!
cdadams1223
Silver Supporter
- May 9, 2023
- 187
- Pool Size
- 13000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite Pro (T-15)
Add 5ppm or in your case 54 fluid oz of 10% liquid chlorine or 43 fluid oz of 12% liquid chlorine. Not sure which one you have. Pool Math is your friend though. Makes it easy to figure these things out.
Thank you.. that helped. I will add about 54 oz.of 10% liquid chlorine.
Last edited:
Add Chlorine based on FC to CYA relationship to stay above the minimum.
Here are my levels
FC 3.5
CC .5
TA 130
CYA 40
Salt 2400
Block test: PH 7.5, CL 5
Do I need to worry about a CSI test?
FC 3.5
CC .5
TA 130
CYA 40
Salt 2400
Block test: PH 7.5, CL 5
Do I need to worry about a CSI test?
- Jun 22, 2014
- 47,854
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
No need to worry about the CSI result since you have a vinyl pool. You can turn that toggle off in the PoolMath app.
Watch the FC. Don't let it fall any lower to prevent algae. Salt may be a low. Check your SWG owners manual to be sure.
Watch the FC. Don't let it fall any lower to prevent algae. Salt may be a low. Check your SWG owners manual to be sure.