Chlorine Lock ?

[Watermom]

Yes. Take it on up. Mustard algae is tough to eradicate.

[mjsboone]

Gosh! Hopefully got one problem under control and now mustard algae! How long does it take to get rid of it? Days? Weeks? Do we continue to brush or just vac to waste? This pool is making me crazy. I love it but, it has been a real pain in the rear this summer.

[FormerBromineUser]

.
Please don't be discouraged!

Look at all you have learned:
-How to ignore pool store advice!
-How to use a K2006! (Consider getting larger replacement bottles, btw)
-Not to use your chlorinator and tabs (except for vacation if you choose)
-The importance of maintaining good CYA/FC ratios
-That CC is not a good thing...!!!
-Patience
-etc.

I try not to give much advice here as there are some really, really knowledgeable people on this forum who can answer MUCH better than me. But I have noticed that you received some conflicting advice over the last month. That's only because people really want to help you that they have chimed in but I think it has contributed to your confusion. My advice? Learn to recognize the experts and go with their recommendations.

[FormerBromineUser]

...you received some conflicting advice over the last month.

Whoops! I meant confusing!