Greenish “mud” on water level liner.

[livelox]

Hello everyone.

Livelox here.
I have came across this greenish lines around the levels of the pool water on the liner.
I can scrub them off with a little bit of pressure scrubbing by hand.
I believe it has something to do with my hardness levels ? Or iron or something ?

FC pH CYA is at normal levels. TA is at 200ppm and slowly getting down.
Thank you everyone.

 

[Texas Splash]

Hello! Can you do a couple things for us first:
1 - Post a picture of what your seeing?
2 - Post a full set of water test results with your TF-100 or Taylor K-2006C test kit?

That will help us get started. Thanks!