Yellowish tint sediment bottom, walls and ladder but Chems Okay. Need suggestions

[nuthouseinva]

Pool has been doing awesome. No issues all season.....but...
We've had terrible rain here the last couple of weeks. After rain I usually have dirty pool bottom which I vacuum up. Check chems and balance. All good.

Noticed the last couple days that pool bottom kept getting dirty. Rain every other day. So I brushed bottom and filtered on high speed for 12 hours or so. All looked good. Chems were good. Bumped up FC a point or two after heavy rains.

Today it was sunny and hot. came home and bottom had yellowish tint sediment, walls little covered, and pool ladder definitely has yellowish stuff on it. Water was actually clear though. Checked chems.
u
FC 7.5 (target 7.0- usually at 4.5 by end of day)
CC 0
PH 7.5 (has been high after heavy rain, which has been often)
TA 70 (was 90 before all the heavy rain)
CYA 50
temp 90

using 12% chlorine. been using about 14 oz. or so of chlorine per day on average.

In haste I put FC to 20 per chart for SLAM and will filter on high speed until clear. Any other suggestions?
Tomorrow is gonna be sunny and super hot.
Brian

 

[nuthouseinva]

Overnight Chlorine Loss was 3 ppm. CC was 0.5 ppm. yellowish stuff seems to be gone already.
bumped FC back up to 20. continueing to filter through today.
Maybe I caught it early enough from getting out of control.

 

[zea3]

Sounds like you are on the right track.

 

[Derb22]

I’m a little worried about the overnight loss. I think you are correct to hold slam levels until you pass the Oclt.

 

[nuthouseinva]

Water is clear and sparkly. but I'm Sticking with the SLAM.

8/8
6:30am FC 17
5:30pm FC 11.5 CC 0.5 was 94deg+ today.
10:00pm FC 17 CC 0.5
double checked my CYA again. definitely at 50. Was worried all the torrential rain lowered it down too low.
Hoping OCLT is better tomorrow morning.​

 

[Sminor]

Sounds like you caught it early on! Good job!