Bit of calcium

greatestvalue

Member
Mar 12, 2022
19
Orcutt CA
Hi
Hope everyone is awesome.
I emptied my tub when leaving for 3 weeks, as well as it was its 3-4 month cleaning.

I found a bit of white substance, which I believe is calcium around the tub. My calcium level is always within limit when testing. There was no major substance, but before filling back up I would like to remove this.

I used a bit of vinegar/water and it does seem to be removing the light stuff.

I came looking for answers here and am curious with the information in the spa maintenance guide which states...

"On a weekly schedule, clean your spa jets and shell using a sponge with some white vinegar on it. This can be used to scrub away the scum line on the edge of the waterline as well.

Ensure you’re cleaning the inside if the hot tub as often as possible and wiping down the shell as well. While you’re in cleaning mode anyway, give your hot tub a quick once over using a 10% bleach solution. This works best to keep mildew at bay."

Is the suggestion above, that we should be using vinegar and/or bleach mixture in the water, while the tub is filled each week?

Thank you
 

Mdragger88

Bronze Supporter
TFP Guide
Jun 1, 2018
6,947
Hernando, Ms
Pool Size
26000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Intex Krystal Clear
Most jets & headrests can be removed to be cleaned if using vinegar while the tub is filled- perhaps that part should be edited.
The diluted bleach water will not harm anything. I generally just use a microfiber rag & wipe everything down with the chlorinated tub water without removing anything if the tub is filled. I don’t really experience a scum line issue.
What is your current ch?
To prevent scaling keep ph in the 7’s, lowering ta to 50/60 can help moderate ph rise. Along with adding borates after lowering ta.
Keeping csi slightly negative should help prevent scale.

 
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greatestvalue

Member
Mar 12, 2022
19
Orcutt CA
Most jets & headrests can be removed to be cleaned if using vinegar while the tub is filled- perhaps that part should be edited.
The diluted bleach water will not harm anything. I generally just use a microfiber rag & wipe everything down with the chlorinated tub water without removing anything if the tub is filled. I don’t really experience a scum line issue.
What is your current ch?
To prevent scaling keep ph in the 7’s, lowering ta to 50/60 can help moderate ph rise. Along with adding borates after lowering ta.
Keeping csi slightly negative should help prevent scale.

MY CH was good prior to me emptying the tub.

PH must have be a bit high for my water at 7.8, based on what I am reading about the little bit of calcium that is appearing.

It seems at this point vinegar took care of most of it.

So I will start doing the weekly wipe down inside the shell while the tub is filled. In the meantime I will keep the PH lower than 7.8. Maybe add a tad of PH reducer when I fill, after testing if it isn't on the lower side to get it to 7.2 and and next time I empty I will see how it is.

I cant see this calcium buildup when the tub is filled, the water is extremely clear and soft.
 

Mdragger88

Bronze Supporter
TFP Guide
Jun 1, 2018
6,947
Hernando, Ms
Pool Size
26000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Intex Krystal Clear
If it’s building up on the shell it may also be building up in your heater.
Keeping csi neutral to slightly negative should prevent the issue.
Play around with all the parameters in PoolMath to see how they affect csi.
 
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