Mustard Algae PITA!!!

[goinflyn]

I've been slamming my salt pool for 3 days following the SLAM method and every morning there's a brown powdery coating in a few crevices in the bottom of my pool. The water is crystal clear and chemical numbers are good. I cleaned and recoated my DE filter and when I vacuum the bottom,I overboard the water instead of using the pool filter. Could it be pollen or something in the air that settles to the bottom of the pool? Ill attach the pool readings for reference. Thanks for your help. CYA is a little low since start up and I'll add more once the SLAM is done and FC drops to around 6. 12x24 above ground pool. Thanks. FYI i've been dealing with this issue ever since I installed the pool 6 years ago.


CYA - 55
FC - 25 (drops to 16-18 overnight)
Salt - 3600
TA - 80
PH - 7.2
CC - 0

 

[PoolStored]

Could be pollen, but that typically shows up in skimmer sock/hairnets or filter as they tend to float.

With the overnight loss, more likely algae. Keep slamming.

 

[goinflyn]

Is it possible it’s DE powder?

 

[goinflyn]

5 day SLAM now.