Thin layer of white granules floating on pool surface

[missourian]

Just this afternoon I noticed this, a thin surface of white granules floating on top of my pool, ran the tests with TF100

PH - 7.5
FC - 7
CC - 2.5
TA - 80
CYA - 40
Calc Hard - 300

What should I do, I am consistently maintaining high chlorine levels to get rid of algae issues, I will be shocking the pool during First week of October, as every weekend I need to spend away from my home.

 

[pwrstrk]

I'm not sure what the stuff floating on the surface is.
If you've been fighting algae issues and with a CC of 2.5 it sounds like you need to SLAM the pool. pool-school/shocking_your_pool. You have to follow the process to the T. Your done SLAMing when
1 water is crystal clear.
2 CC of 0.5 or less
3 you pass the OCLT pool-school/overnight_fc_test.

 

[ps0303]

Are you sure they are granules and not maybe pollen from trees? Any pictures of it?

 

[257WbyMag]

Some granulated chlorine products can sit atop the water in certain amounts long after being added. Did you add any powders or granules to your pool?

 

[missourian]

Some granulated chlorine products can sit atop the water in certain amounts long after being added. Did you add any powders or granules to your pool?

I moved to BBB method around 10 days back, yes before BBB, I use tablet form of chlorine and I used some granulated chlorine to shock the pool once, but that was around 10 to 12 days back. Right now I am maintaining my FC close to 7 - 9 ppm and CC at 3 ppm, I will be slamming my pool only after October 2 due to my travel oriented job. Lot of black/yellow algae already gone( Myself and wife brushing twice daily). Is there a concern to maintain the FC at this high level for almost 2 weeks?

 

[pwrstrk]

7-9 ppm of FC is not a high level for your CYA level. In fact 7 ppm is a good place to be. Your SLAM level is 16 ppm. You can swim in anything up to SLAM level.

When you get the time SLAM it. Any questions just ask.