Testing Check With Questions

[KeriCarter]

FC 10
CC .5
PH 8 (2 drops of R-006 brought it down to 7.6)
TA 130
CH 210
CYA 190

The pool is crystal clear and looks amazing! We got some rain yesterday and that, along with pumping to waste, has helped bring my CYA down from over 400. Yea! I’ll continue to work on that. I used the Pool Math app and added bleach in the correct amount to bring my FC up to 20 as recommended.
My PH is a little high. That’s new for me. Could it be the rain or maybe the bleach I keep pouring in to counteract the high CYA? I did the base demand test and it took 2 drops of R-2006 to correct down to 7.6. What is the best way to correct it?
I am assuming that bringing my CYA down slowly is ok? I could do it faster, but being new and with the water being so clear, I wasn’t sure if I should. Thoughts?
Thank you guys!

 

[Toxophilite]

If from added water, the pH rise would have to come from fill water, as rain has very low pH from the standpoint of pool maintenance, it's usually in the 5's. Bleach would not be culprit, as it is more pH neutral. You will need to use MA to lower the pH. Lowering pH over several repeats, over a long time, will slowly lower your high TA. My recent lowering from initial TA 120's to 80 was a series taking it to about 7.4, running features for aeration, and lowering again when it hit 8.0. My fill water is high TA, so I still have that to constantly deal with in MA additions.

 

[mknauss]

As long as you stay algae free, you can play along with the very high CYA. If anything starts growing, time to drain.
Keep the fc at or above 10 ppm. pH can test high when FC is above 10 ppm.

 

[KeriCarter]

If from added water, the pH rise would have to come from fill water, as rain has very low pH from the standpoint of pool maintenance, it's usually in the 5's. Bleach would not be culprit, as it is more pH neutral. You will need to use MA to lower the pH. Lowering pH over several repeats, over a long time, will slowly lower your high TA. My recent lowering from initial TA 120's to 80 was a series taking it to about 7.4, running features for aeration, and lowering again when it hit 8.0. My fill water is high TA, so I still have that to constantly deal with in MA additions.

Thank you! That makes sense. I’ll look up the procedure for using MA and print it out for my handy dandy notebook.

As long as you stay algae free, you can play along with the very high CYA. If anything starts growing, time to drain.
Keep the fc at or above 10 ppm. pH can test high when FC is above 10 ppm.

Thank you. When you say start growing, you mean algae on the plaster? I’m rocking a 20 FC as of this afternoon’s testing. I won’t be back in town until Monday to retest.
Does the PH continue to read high after the FC has gone down, or does it only read high when the FC is high?

 

[PoolStored]

Thank you! That makes sense. I’ll look up the procedure for using MA and print it out for my handy dandy notebook.

Thank you. When you say start growing, you mean algae on the plaster? I’m rocking a 20 FC as of this afternoon’s testing. I won’t be back in town until Monday to retest.

Could be on the plaster, could be cloudy/hazy water, or teal or green pool.

Does the PH continue to read high after the FC has gone down, or does it only read high when the FC is high?

If your FC is <10, your pH test should be good!

 

[KeriCarter]

Could be on the plaster, could be cloudy/hazy water, or teal or green pool.

If your FC is <10, your pH test should be good!

Thanks a million!

 

[KeriCarter]

Could be on the plaster, could be cloudy/hazy water, or teal or green pool.

If your FC is <10, your pH test should be good!

Is leaving my slide water running all the time effecting my PH as well? If so, should I continue to do that so I can add more MA and therefore lower my TA?
My acronyms are showing

 

[PoolStored]

Is leaving my slide water running all the time effecting my PH as well? If so, should I continue to do that so I can add more MA and therefore lower my TA?
My acronyms are showing

You are picking up what we are laying down.

Likely the slide water running is aerating, which will raise pH. How much and how quick? Unknown.

TA of 130 isn't "BAD." But, 130 TA will likely lead to more rapid pH rise. So, the answer is yes, run your slide and manage pH to keep it in the 7s until your TA is between 60-80. When you get there (TA=60-80) your pH rise, and need to add MA, should slow substantially.

 

[KeriCarter]

You are picking up what we are laying down.

Likely the slide water running is aerating, which will raise pH. How much and how quick? Unknown.

TA of 130 isn't "BAD." But, 130 TA will likely lead to more rapid pH rise. So, the answer is yes, run your slide and manage pH to keep it in the 7s until your TA is between 60-80. When you get there (TA=60-80) your pH rise, and need to add MA, should slow substantially.

That makes sense to me. I really appreciate your help. Thank you so much!

 

[KeriCarter]

Going to work on getting PH down tomorrow. Is this the correct MA to use? How long should I make the kids wait to swim after adding?
Thanks guys!

 

[mknauss]

That is normally 20% strength.

Add the acid in a pencil size stream at the pool return with the pump running. Brush the area well.
Let them swim.

 

[KeriCarter]

That is normally 20% strength.

Add the acid in a pencil size stream at the pool return with the pump running. Brush the area well.
Let them swim.

Thank you sir!

 

[KeriCarter]

That is normally 20% strength.

Add the acid in a pencil size stream at the pool return with the pump running. Brush the area well.
Let them swim.

I can only find this. Is it ok? I don’t want to make a mistake.
Thank you!!

 

[PoolStored]

From the SDS, there are no other ingredients listed other than hydrochloric acid so there are no detergents in the product. It would be fine to use for lowering pH in a pool. Others have also used with no Ill side effects.

As far as how much to add, the 20% is not a part of Pool Math. In PoolMath, select the 31.45% MA and then multiply the resulting recommendation at 31.45%MA by 1.5. E.g. if PoolMath tells you to add 8 oz of 31.45%, add 8 x 1.5 = 12 oz of the 20%. In pool math, just tell it you added the recommended amount of 31.45% (in the example, the 8oz).

Good to go!

 

[KeriCarter]

From the SDS, there are no other ingredients listed other than hydrochloric acid so there are no detergents in the product. It would be fine to use for lowering pH in a pool. Others have also used with no Ill side effects.

As far as how much to add, the 20% is not a part of Pool Math. In PoolMath, select the 31.45% MA and then multiply the resulting recommendation at 31.45%MA by 1.5. E.g. if PoolMath tells you to add 8 oz of 31.45%, add 8 x 1.5 = 12 oz of the 20%. In pool math, just tell it you added the recommended amount of 31.45% (in the example, the 8oz).

Good to go!

Thank you for the info, but I appreciate the math formula even more! I’m already nervous to even touch it!
You’re amazing!

 

[PoolStored]

I’m already nervous to even touch it!

Don't fear MA. Respect MA. At 20%, even if you get a bit on your skin, it might sting a little...just dunk you hand/arm in the pool, you will be fine. DO WEAR SAFETY GLASSES of some sort. Lower the jug just over the water, or slightly into the water (the pool water will help support/stabilize the jug) and our it slowly over a return in a pencil thick stream. Pour it downwind (You stand upwind) so you don't get fumes. Again 20% isn't all that bad. Respect, not fear.

ALWAYS ADD ACID to WATER, Never add WATER to ACID. We recommend you DO NOT premix with water, then pour into your pool.

You got this!

 

[KeriCarter]

Don't fear MA. Respect MA. At 20%, even if you get a bit on your skin, it might sting a little...just dunk you hand/arm in the pool, you will be fine. DO WEAR SAFETY GLASSES of some sort. Lower the jug just over the water, or slightly into the water (the pool water will help support/stabilize the jug) and our it slowly over a return in a pencil thick stream. Pour it downwind (You stand upwind) so you don't get fumes. Again 20% isn't all that bad. Respect, not fear.

ALWAYS ADD ACID to WATER, Never add WATER to ACID. We recommend you DO NOT premix with water, then pour into your pool.

You got this!

Don't fear MA. Respect MA. At 20%, even if you get a bit on your skin, it might sting a little...just dunk you hand/arm in the pool, you will be fine. DO WEAR SAFETY GLASSES of some sort. Lower the jug just over the water, or slightly into the water (the pool water will help support/stabilize the jug) and our it slowly over a return in a pencil thick stream. Pour it downwind (You stand upwind) so you don't get fumes. Again 20% isn't all that bad. Respect, not fear.

ALWAYS ADD ACID to WATER, Never add WATER to ACID. We recommend you DO NOT premix with water, then pour into your pool.

You got this!

Thank you. That is very helpful information and I will follow it. I really appreciate it.