OCLT good…but algae still in pool

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300winmag

Gold Supporter
Aug 2, 2016
224
Dallas, TX
in ground pool. Full tx sun.
Pebble finish
SWG (currently off)
Spa overflow, 3 fountains and 2 vertical bubble columns. All running during the SLAM
CYA is 50
Ph of 7.2 at start of SLAM
Maintaining SLAM FC of 20ppm.

I lost 1.0 ppm of FC overnight, but I still have yellow mustard algae on the walls and floor. So, the SLAM will continue.

I’ve been at this for several days now and I’m shocked how much Crud I still stir up when brushing.
My question is, at some point will the SLAM rid the pool of the stuff I’m stirring up? Or maybe the filter is supposed to catch it?

Thanks
 
300winmag said:
My question is, at some point will the SLAM rid the pool of the stuff I’m stirring up? Or maybe the filter is supposed to catch it?
Click to expand...
Yes. How often are you brushing? Did you scrub behind the light? Under the drain covers?

Do me a solid and retest your CYA using these instructions:
www.troublefreepool.com

CYA - Cyanuric Acid Test

Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” … Read more…
www.troublefreepool.com www.troublefreepool.com
 
Brushing at least 4 times per day
Scrubbed the light….not the drains!

Retested cya w this method and got 50. It obscured at 40, + 10. So 50.
Before i was just looking when the dot disappeared, which was at 50. So maybe I lost 10ppm of cya during this?
 
300winmag said:
Before i was just looking when the dot disappeared, which was at 50. So maybe I lost 10ppm of cya during this?
Click to expand...
Testing variance. Ignore it. CYA is 50. Strong indirect light is the key to this test. Get those covers off and scrub...PUMP OFF (AT THE BREAKER).
Good job.
 
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