White gritty scale

[PoolDoc]

+ Unless you still have live algae, or unless your CYA > 100 ppm, you don't need chlorine that is that high.

+ I don't remember, and haven't checked, your prior test results.

+ These videos apply, mostly, to the HTH 6-way => http://pool9.net/tk-guide/ http://pool9.net/tk-interfere/ The TA video, in the 2nd set, explains how to test TA when chlorine is high.

[Wapak]

Ok PoolDoc, here are my current test results I just took:

Chlorine. Close to 10just strong yellow now, no orange
T A: 160- I was able to read, it did not turn yellow as it did this morning. It also was at 180 yesterday when I started aerating.
PH: 7.5 (it was 8 earlier today)

I was going to add more acid to again lower ph-do you have any advice on amount? Do to this problem Im not exactly sure how much acid I should be adding??

Also, I have heavier build up along my deep end seams, its darker in color, I am just wondering if some of that is algae or just a thick pile of the scale? Some of it did go with brushing and vacuuming?

A pile of this stuff has been coming out my waste hose and filter basket holder-enough to fill a spoon! If you want me to send a picture got a great sample now I could get a pic of!!

[PoolDoc]

+ Use whatever doses you have before, but decrease them gradually. If you haven't been adding any particular amount, I'd start with 1/2 gallon of muriatic acid. If you find a dose takes you too low, reduce the dose.

+ Brush lightly those areas you think might be algae, but don't scrub.

+ Please send pictures to poolforum@gmail.com

[Watermom]

When you send the pics, include the thread number (16457) in your email.

[Wapak]

Still brushing off some, I can see its really brushing off in some spots where the coating was not as concentrated.

T A is most certainly coming down, its at 120-130 now.
ph holding at 6.8
Chlorine down to 1.-2.

Kids want to swim tomorrow, would you think its ok to let them in there for awhile? Didnt know if thats a good idea with the adjusting im doing?

Thanks again,

[PoolDoc]

Yes.

[PoolDoc]

Finally getting around to pictures:








Color enhanced image:

[Pappy]

The slower action in the deep end may be due to lower circulation and/or lower temperature. You might try hooking your vac head up and leaving it down in the deep end for an hour or 4 to stimulate circulation. See if you can tell a difference in the immediate area of the vac and other areas.

[Wapak]

Thank you Pappy, I will try placing the vac in the the deep end for a bit.