How long should I wait before adding additional muradic acid? My TA is 160 for my 40,000 gallon SW pool. I added a jug last night and it didn't lower the TA.
High TA
- Thread starter Aunt Juju
- Start date
Welcome to tfp, Aunt Juju 
Typically we suggest waiting 1 hour with pump running then test again and add.
What is your ph at?
Typically we suggest waiting 1 hour with pump running then test again and add.
What is your ph at?
Ph is 7.2. Water also is clear with a green tint. Don't know what that's about. TC is 4.5. Also, CYA is 20 after adding stabilizer (filled old pantyhouse and put in skimmer baskets.) How long will it take for the CYA to go up? Sorry, completely new to this pool stuff.
To continue to lower TA you will need to aerate to get the ph up again. See: http://www.troublefreepool.com/pool-school/lowering total alkalinityAunt Juju said:
That sounds like metal in the water. See: http://www.troublefreepool.com/pool-school/metal stainsAunt Juju said:
How much did you put in and what was your target? It can take up to a week for cya to fully show up in test, so I would not test again for now.Aunt Juju said:
It will help us help you is you put your pool and equipment details in your signature.
Thanks. My pool has a "bubbler" that I can turn on to aerate. Should I add more acid yet? I don't have a test kit for metals, so I will take a sample to the pool store. However, on 6/5/12, the pool store told us to add one bottle of Metal Free because our iron number was 1.5. Pool was completely clear prior to adding Metal Free. Once we added the Metal Free, the pool turned cloudy, then green but retested 0 for iron. Was told to add a case of liquid chlorine. Have since added 2 additional cases. Water is getting clearer daily, but not less green. I will add info to my signature.
Yeah, turn on the bubbler.Aunt Juju said:
Don't add acid until you ph is back up to 7.7-7.8, then bring it back down.
When you say the water turned green, you meant green but still clear? If so, most likely that was due to adding the chlorine.
It would help us if you post a full set of test results to move forward. Post what you have for now.
It sounds like you are shocking the pool? Why?
When I was told to add Metal Free, my chlorine level was zero. I thought that the green might be algea forming. Here are my test results for today:
Ph 7.2
TA 160
Cya 20
TC 4.5
Ch 250
Ph 7.2
TA 160
Cya 20
TC 4.5
Ch 250
First and foremost you need an appropriate test kit. What do you have now? Where did those numbers come from? See link in my sig for details...I like the tf-100, best bang for buck.
If you suspect algae, an Overnight Chlorine Loss Test (OCLT) would help you know. See: http://www.troublefreepool.com/pool-school/overnight_fc_test It will be difficult to do the OCLT with just a TC (Total Chlorine) test, but you can try.
If you suspect algae, an Overnight Chlorine Loss Test (OCLT) would help you know. See: http://www.troublefreepool.com/pool-school/overnight_fc_test It will be difficult to do the OCLT with just a TC (Total Chlorine) test, but you can try.
Also, even though recently added cya (less than one week since addition) may not show up on a test, you can assume it is in there and base your target FC on the amount of cya you added -- so if it the test says cya of 20 but you know you added enough to get to 40 two days ago, assume a cya of 40.
This is probably a stupid question, but I want to do an overnight chlorine test and do not know how to shut off the SWG. Is there an "off" button somewhere? I am such a girl.
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