SLAM help

[CLove]

Hi I have an a AGP 24 foot 13,500 gallon intex pool, I follow the BBB method. We’ve had thunderstorms off & on for over a week and there was a day this last week that when I removed the solar cover to clean and add chlorine there was what appeared to be algae and slight cloudiness. (My pool has been crystal clear all season, water testing great daily). I had not added any chlorine for 2days, nor vacuumed, due to lightening and rain. Thursday, there were tons of spots that had a greenish tinge to them, so I vacuumed & brushed, backwashed to drop level about 2” (it was too full due to rain), started the slam process by Adding about 3 gallons of liquid chlorine according to the pool math app. This was my first time shocking pool. Friday when I tested, pH was high at 8.0 and FC at 10 so I added muriatic acid according to pool math app to lower pH. Today (Sat), it’s clear, maybe not as perfectly crystal clear as usual, but it’s clear and there’s no algae stuff on bottom. I’m attaching a photo of my current levels which are free chlorine 10 & combine chlorine is 0, pH is 7.6 and total alkalinity is 90. Pool is no longer cloudy at all it doesn’t appear that there’s any type of algae or dirt looking stuff at all on the bottom. I’m currently vacuuming and my question what do I do next? My chlorine is high so I’ll keep cover off all day after it’s done vacuuming. A pic of day 1 when I discovered it, next morning after SLAM, today + pool test results. Thank you

 

[mknauss]

Welcome to the forum!
I suggest you follow the SLAM Process. From your description, you did not. Read the article. When you pass the three criteria, then follow the FC/CYA Levels
How are you testing your pool water chemistry?
Rain does not cause algae. Low FC does. You need to add chlorine every day to keep the FC above minimum. And brush your pool often.
I suggest you read ABC's of Pool Water Chemistry.

 

[CLove]

Welcome to the forum!
I suggest you follow the SLAM Process. From your description, you did not. Read the article. When you pass the three criteria, then follow the FC/CYA Levels
How are you testing your pool water chemistry?
Rain does not cause algae. Low FC does. You need to add chlorine every day to keep the FC above minimum. And brush your pool often.
I suggest you read ABC's of Pool Water Chemistry.

Hi thanks. I use Taylor k2005. Yes I believe I missed 2 days of testing /adding liquid chlorine + 2+” of dirty rain, debris from the storms etc all contributed to the issue.

Unless I’m not understanding SLAM correct I did follow. Here’s what I did. From the pool math app I imputed my test results which showed FC was 0. I turned on the SLAM protocol and it suggested adding 364oz I believe, of liquid chlorine. I put that in Wednesday night after I vacuumed, backwashed, brushed, etc. less than 24hrs later more than half algae was gone and what was left was brown/black, no green. I vacuumed, brushed etc. again. (keep in mind I run my sand filter 24/7). I tested and FC was at 10 with pH at 8. I added the suggested amt for the muriatic acid. I’m attaching another pic of my test logs. I’m not quite sure what you’re referring to that I missed. Thursday and Friday according to my Taylor kit the free chlorine is at 10, my pH is now 7.6.

 

[CLove]

I should add that the pool floor was clean when I was done vacuuming Wednesday night, so whatever was on the bottom Thursday morning was new. It was covered overnight but stuff does get in. The pic is the more blue looking water in my original post.

 

[mknauss]

Read the SLAM Process. You need a FAS-DPD test for FC/CC testing. You raise your FC to SLAM level based on your CYA and maintain that level of FC by testing and adding chlorine every few hours, no less than 3-4 times per day. When the pool is Crystal Clear, you do the Overnight Chlorine Loss Test. You must have a FAS-DPD test kit to perform this process correctly.