@Nitro wrote up an AWESOME and clear description of lowering ALK and PH in 2009 (see below). Nitro said to use 1/2 the amount of acid necessary to reduce ALK to the target level (I use target of Alk = 50). He said to not use more than than 1 cup of acid at a time. I think, however, he was referring to dry acid.
What is the max amount of muriatic acid (Acid Magic 31.45%) in fluid oz. you can add at one time in this step (step 3 according to his directions below)?
Also, is this method quoted below still considered safe on equipment and efficient even though it was posted in 2009? (I realize the chemistry does not change but wondering if there is a different understanding of impact on equipment, etc.)
*****The rest of this post is quoted from the relevant section of Nitro's post which is located at Lowering Total Alkalinity
"1. Turn on all your jets and air features and keep them on the entire process. (i.e. Aerate)
2. Calculate how much you want to lower your TA, and how much acid you need to add to lower it.
3. Add to the tub HALF (not > 1 cup nor < 1 TBS) of the amount of the remaining acid you need to add.
4. Aerate for 30min, and check TA/pH.
5. If TA > Target and pH is > 7.8, goto step 2.
6. If TA > Target and pH is < 7.6, goto step 4 one time.
7. If TA > Target and you can't get pH > 7.8 via aeration, Target too low. Stop here.
8. If TA = Target and pH is > 7.8, Target too high. Lower Target TA and goto step 2."
Thank you, Doug
What is the max amount of muriatic acid (Acid Magic 31.45%) in fluid oz. you can add at one time in this step (step 3 according to his directions below)?
Also, is this method quoted below still considered safe on equipment and efficient even though it was posted in 2009? (I realize the chemistry does not change but wondering if there is a different understanding of impact on equipment, etc.)
*****The rest of this post is quoted from the relevant section of Nitro's post which is located at Lowering Total Alkalinity
"1. Turn on all your jets and air features and keep them on the entire process. (i.e. Aerate)
2. Calculate how much you want to lower your TA, and how much acid you need to add to lower it.
3. Add to the tub HALF (not > 1 cup nor < 1 TBS) of the amount of the remaining acid you need to add.
4. Aerate for 30min, and check TA/pH.
5. If TA > Target and pH is > 7.8, goto step 2.
6. If TA > Target and pH is < 7.6, goto step 4 one time.
7. If TA > Target and you can't get pH > 7.8 via aeration, Target too low. Stop here.
8. If TA = Target and pH is > 7.8, Target too high. Lower Target TA and goto step 2."
Thank you, Doug