Pebble Tec - Salt Water Pool - Stains, Discoloration, Algae - Support/Help Needed

[MattNeedPoolHelp]

Recently Cleaned Filter with Pool cleaning company. Shocked the pool. Ran filter for 2 days. I’m noticing a discoloration / surface differences in areas of the pool. This is a Pebble Tec pool. I’m not the original owner. It’s about 5-10 years old. I’m trying to gain warranty options from previous owner through my realtor. Does this need acid washed? Products to help the color? Should I try to get a Pebble Tec contractor to review it? Any help would be wonderful. Thanks in advance


Water Temp: 67
pH: 7.6
TA: 80
Calcium: 350
Salt Water Generator: 3560
Chlorine: 4 Phosphate: 73
Iron 0:
Copper: 0
CYA: 90-100
Chlorine: 4 - Shocked after filter clean Pentair DE Filter - FNS Plus - 48 Pentair Pump and Cleaner
Pool: 15,000 gallons

 

[JohnT]

Welcome to TFP!

First guess would be iron staining. High chlorine levels can oxidize iron in the water and result in it depositing on pool surfaces. Rubbing with a vitamin C tablet will lighten an iron stain pretty quickly.

 

[TinFoilHat]

Your test results look like they are from a pool store. We recommend doing your own testing with reliable kits we suggest as store tests are unreliable.
Test Kits Compared
You should get one of them and post the results after using it. I prefer the TFProSalt.
Pool Care Basics
FC/CYA Levels
PoolMath