Sodium bicarbonate and calcium chloride

[Tom18202]

I need to raise both my alkalinity and hardness. I added my sodium bicarbonate at 10am this morning it is now 8 hours later is it too soon to adjust hardness with calcium chloride?

Thank You for any help.

 

[PoolStored]

I need to raise both my alkalinity and hardness. I added my sodium bicarbonate at 10am this morning it is now 8 hours later is it too soon to adjust hardness with calcium chloride?

Thank You for any help.

What was your TA then and now?

No need for Calcium in an above ground vinyl pool, unless you have a heater.

 

[Tom18202]

40ppm before haven’t check since adding as I haven’t done anything else yet. I replaced my liner this year so it’s brand new city water that was low on everything.

 

[JamesW]

I would not do calcium on the same day as bicarb.

 

[JamesW]

You don't need calcium for a vinyl liner.

 

[JamesW]

They can react together and cause problems, especially if the first chemical is just dumped in and sitting on the bottom.

If the first chemical is well distributed and the pool is well brushed, you are probably safe in a few hours, but I would wait being extra cautious.

Bicarb, salt or calcium can sit on the bottom for a day or more even if the system is running.

 

[Tom18202]

I will wait till tomorrow AM. I brushed the pool after adding the bicarb. But can wait till the morning.

 

[IceShadow]

What’s your reasoning for adding CH to your pool? Most liner pools don’t have minimum recommended calcium levels.

 

[JamesW]

When bicarbonate sits on the bottom, the pH goes to about 8.3 near the bicarbonate and some of the bicarbonate becomes carbonate, which combines with the calcium to form calcium carbonate scale.

 

[pjt]

40ppm before haven’t check since adding

How are you testing?