Raise your pH by aerating or adding 20 Mule Team Borax, then use acid to bring it and your TA back down to 7.0-7.2 and raise the pH again and retreat...

Thought perhaps you were using baquacil instead of chlorine.

Somethings out of balance. Like I said, post your readings.

i got every thing to...

What could cause alka to be zero? Would cement falling into the water have any impact? I recently had stone work done around pool and landscapers...

Use 20 Mule Team Borax to raise your pH without raising your TA. Use about a third of the box. Run your pump and test your pH after 4 hours.

You...

theresa, have your water tested for metals. I can't think of anything else that would yellow tile like that.

Over time the TA will lower as you add acid. You could add about 2 gallons of acid if you wanted to speed this process up a little.

The stabiliser...

That would be normal that acid will lower your alk but also your pH.

You have to do it somewhat slowly.

GEt your pH up to the highest number in...

Great! Sounds like your Culligan tech gave you great advice about using the liquid chlorine.

btw my cya is very low it says

Get your pH up to the mid to high level in the recommended range and then use Muriatic acid to lower your pH to 7.2, then aerate your pool to get...

Black Algae is difficult to treat and usually comes back unless you acid wash. Could it possibly just be another stain?

Brushing will help open up...

whats the reason for high TA.

A couple of things from the top of my head:

(1) Pool owner added to much sodium bicarbonate, error in...

It's probably suspended algae. You didn't post your test readings, so it is hard to say. You may need to add more chlorine.

Muriatic Acid will lower both TA and PH.

Don't know the volume of your pool, but I wouldn't add more than 4 oz's to a cup at a time if under 10K...

100 TA is not bad at all. 80 - 110 is ideal. Raise your PH by aerating your pool. If you have a fountain or aerator, run it for 24 hours and you...

thank you for the reply.... I have been wondering if I should be using a different acid. I have been given "triclorosoclanurio". ....(Which...

Thanks, will keep everything like its is from now on. should I shock treat pool with a reg shock or just use the SWG to shock the pool?

Well, with...

Have read most of the postings and tried it - still no change - in fact worse! 20k gallon salt pool. Alkalinity 150 and ph 7.6. need to get to alk of...

Just for clarification, the opening post was mine:

Still adding acid..............800 ml today. The water is clearer, but the alkalinity is still...