- Jun 25, 2020
- 83
- Pool Size
- 11000
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-30 Plus
This thread is my SLAM thread.
This is my first SLAM. Prior to this, I drained 45% of my water to get my cya to 50.
My pool was crystal clear to start, but I decided to SLAM because I was at such a high CYA for so long, another thread said that I was on the verge of an algae bloom because my sanitizer was rendered useless, and I was not at minimum FC levels for quite sometime.
Started the SLAM last night at 9:30pm.
Starting numbers:
FC=0.5
CC=1
pH = 7.2
TA=90
CH=325
CYA=50
I had to keep adding more bleach than pool than Pool Math suggested to get to slam level, testing 30 minutes after each addition. By 11:00pm I was at FC=22
CC=0.5
at midnight pm:
FC=19.5
CC=0.5
I had failed the OCLT in less than an hour! I added 44oz of bleach, and went to bed.
8:00am:
My wife commented, "Wow, the pool looks even clearer and more beautiful!" How can an already crystal clear pool look clearer? Some of the stubborn "stains" in the corners were gone, and what I thought was general iron staining (yellow streaking on the sloped, painted bottom) was also gone. I now think I may have had a mustard algae problem.
OCLT test result:
FC=4
CC=0
Not exactly sure what the drop over night was, but it doesn't matter.
So, the SLAM continues until the OCLT is less than 1.
This is my first SLAM. Prior to this, I drained 45% of my water to get my cya to 50.
My pool was crystal clear to start, but I decided to SLAM because I was at such a high CYA for so long, another thread said that I was on the verge of an algae bloom because my sanitizer was rendered useless, and I was not at minimum FC levels for quite sometime.
Started the SLAM last night at 9:30pm.
Starting numbers:
FC=0.5
CC=1
pH = 7.2
TA=90
CH=325
CYA=50
I had to keep adding more bleach than pool than Pool Math suggested to get to slam level, testing 30 minutes after each addition. By 11:00pm I was at FC=22
CC=0.5
at midnight pm:
FC=19.5
CC=0.5
I had failed the OCLT in less than an hour! I added 44oz of bleach, and went to bed.
8:00am:
My wife commented, "Wow, the pool looks even clearer and more beautiful!" How can an already crystal clear pool look clearer? Some of the stubborn "stains" in the corners were gone, and what I thought was general iron staining (yellow streaking on the sloped, painted bottom) was also gone. I now think I may have had a mustard algae problem.
OCLT test result:
FC=4
CC=0
Not exactly sure what the drop over night was, but it doesn't matter.
So, the SLAM continues until the OCLT is less than 1.