PH during SLAM/Mustard Algae Minimum

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mavitia22

Well-known member
Jun 27, 2023
61
La Vernia, Tx
Pool Size
16000
Surface
Fiberglass
Chlorine
Salt Water Generator
Hello. I'm in the middle of a SLAM and have questions.

1. I'm letting FC drop to 10 tonight in order to do OCLT. If I pass, I'm starting Mustard algae shock level tomorrow morning.
If FC is at 10 by sunset, could I test PH and add acid to lower it before raising FC to Mustard algae shock level? or do I leave it alone until after the complete SLAM?

2. I'm looking at this chart and see "Yel/Mustard Min" column. Does this mean that's the minimum FC one should always keep to prevent mustard algae? I'm trying to plan where to keep FC after SLAM. Also, is this chart in a table format?

Thank y'all.
Screenshot_20230817_221242_Firefox.jpg
 
Do Overnight Chlorine Loss Test @ slam level.
wait until all is said & done to deal with/test ph
If you have passed ALL 3 end of slam criteria
✅ CC is 0.5 or lower;
✅ You pass an Overnight Chlorine Loss Test
AND
✅ The water is clear.
(Crystal Clear w/no algae dead or alive)
Then move on to the MA protocols.
The MA minimum time frame is different for everyone. Some choose a week or two some choose the rest of the season .
Really depends on how certain you are that you actually had mustard algae & if it’s been a recurring problem despite previous slams or your particular situation.
 
Mdragger88 said:
Do Overnight Chlorine Loss Test @ slam level.
wait until all is said & done to deal with/test ph
If you have passed ALL 3 end of slam criteria
✅ CC is 0.5 or lower;
✅ You pass an Overnight Chlorine Loss Test
AND
✅ The water is clear.
(Crystal Clear w/no algae dead or alive)
Then move on to the MA protocols.
The MA minimum time frame is different for everyone. Some choose a week or two some choose the rest of the season .
Really depends on how certain you are that you actually had mustard algae & if it’s been a recurring problem despite previous slams or your particular situation.
Click to expand...
Thank you for replying. I already let the FC drop because I read on another thread somewhere to drop to 10 for OCLT... did I mess up the SLAM??
 
mavitia22 said:
Thank you for replying. I already let the FC drop because I read on another thread somewhere to drop to 10 for OCLT... did I mess up the SLAM??
Click to expand...
Just Follow the SLAM Process article.
Please note that Each thread is based on that person’s particular situation.
Some who have very long slams (a month or more) or who are having trouble with oclt over & over due to very high fc levels/high drop counts (due to high cya) but every thing else has been crystal clear for an extended time are sometimes instructed to do this. But it is not a normal recommendation which is why it is not listed in the article.
What is your cya level?
 
Mdragger88 said:
Just Follow the SLAM Process article.
Please note that Each thread is based on that person’s particular situation.
Some who have very long slams (a month or more) or who are having trouble with oclt over & over due to very high fc levels/high drop counts (due to high cya) but every thing else has been crystal clear for an extended time are sometimes instructed to do this. But it is not a normal recommendation which is why it is not listed in the article.
What is your cya level?
Click to expand...
Ok, I get it. CYA is 40.
 
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