Question about clear water with dirt or algae

[Awp14]

FC 5.5
CC 0
pH 7.8
CYA 40
TA 60
CH 575

Hi! I need some confirmation on my testing. From what I understand from the site, these numbers are ok except CYA is low. My pH doesn’t fluctuate hardly at all so I understand the high CH is probably ok..

My main question is, when I brush the pool, there is some dirt or algae(?) not sure which on the bottom. Overall, the water is completely clear and blue until I brush and I see some clouds as I go that quickly settle. Overall I have kept debris out of the water. My question is…does the presence of this dirt or algae while brushing mean I need to raise the FC to shock level? I don’t want to raise the CYA yet if so.

Other possibly relevant details…pool water is 57 degrees, not a ton of trees around and leaves are done falling, full sun.

Thank you so much!

 

[mknauss]

Likely dirt if it quickly settles after brushing. Your vac is not picking it up. Need a finer mesh vac filter or a better vac.

 

[Awp14]

Likely dirt if it quickly settles after brushing. Your vac is not picking it up. Need a finer mesh vac filter or a better vac.

Thank you! So no need to shock then? I have a pole vacuum as well and was planning to use that tonight.

 

[mknauss]

If you like you can do a Overnight Chlorine Loss Test. If you fail that, then you should follow the SLAM Process

 

[Awp14]

If you like you can do a Overnight Chlorine Loss Test. If you fail that, then you should follow the SLAM Process

Thanks again!