Chemical levels for new plaster pool

[ajw22]

Leave your TA and pH as is.

Your constant lowering of pH to 7.2 is lowering your TA. Let your pH ride in the 7.8 range.

If you add baking soda you will put yourself on the pH and TA yo-yo chasing it up and down.

See post #43.

 

[old_monk]

ok will keep it like that. I added MA last night to bring pH to 7.6 but I guess TA has dropped by that time and caused the wider swing.

 

[ajw22]

Go easier on the acid and use smaller doses.

 

[Bperry]

Looking back at PoolMath logs, I did FC test at 3:20pm and got 0, water didn't turn yellow. Added Clorox bleach 1Gal at 3:55pm, retested at 4:17 and got FC 2.5. Another test at 7:57 and it read FC is 3.5.
pH stable around 7.5.

Be careful of the clorox bleach. It almost always has soap, fabric softeners, and perfume in it. Pools dont like that stuff. If it says “chloromax” that means its no good for the pool.

 

[old_monk]

Be careful of the clorox bleach. It almost always has soap, fabric softeners, and perfume in it. Pools dont like that stuff. If it says “chloromax” that means its no good for the pool.

Not using that anymore, got the pool chlorine jugs from homedepot.

 

[old_monk]

Just tested again, FC is holding at 4.0, cloudy/rainy day, pH has drifted to 7.8.

 

[ajw22]

Leave pH at 7.8

 

[old_monk]

Leave pH at 7.8

yes, I'm keeping that as my target in PoolMath. It's just that last night numbers were off probably because of drop in TA and MA qty was bit much.

 

[ajw22]

yes, I'm keeping that as my target in PoolMath. It's just that last night numbers were off probably because of drop in TA and MA qty was bit much.

Always test TA before you calculate any MA addition.

 

[old_monk]

Day 9 (Clouds/Rain)-
8:00am - FC 4.0, pH 7.2, TA 50
Noon - FC 3.5, pH 7.8

TA is up by 10 compared to yesterday on its own, why would that be the case? pH yesterday stayed at good level, only had to add 7.2oz MA toward the late evening.
No chemicals added so far today.

 

[old_monk]

I'm not seeing plaster dust when brushing, mostly settled dirt coming off the surface, will switch to once a day brush from tomorrow (day 10).

I love my big Oaks on the property but catkins are killing me. Last couple of days has been crazy.

 

[ajw22]

TA is up by 10 compared to yesterday on its own, why would that be the case?

TA and pH drift and rise naturally. Let them do their thing and don't try and force a number.

pH yesterday stayed at good level, only had to add 7.2oz MA toward the late evening.

What was your pH before you added the 7.2oz of MA?

 

[old_monk]

What was your pH before you added the 7.2oz of MA?

Color was more closer to pink for 8.2 than 7.8. So added MA based off that (and seems like that assessment was wrong given how much it actually dipped).

 

[old_monk]

Day 10 -
FC 3.0, pH 7.8, TA 70, CH 225

TA and CH both drifted up from recent days. CH has been steady at 200 since I added the calcium.

 

[Mdragger88]

Day 10 -
FC 3.0, pH 7.8, TA 70, CH 225

TA and CH both drifted up from recent days. CH has been steady at 200 since I added the calcium.

You don’t need to keep checking the ch as frequently as the fc ph & ta - its not going to change much unless you do something to change it (add calcium, replace water)

 

[Mdragger88]

Do you have the
PoolMath subscription?
It’s wonderful for keeping logs & looking back on trends- they are exportable & you can print them out if you ever need to.
You can also link your account to your profile and others can see your logs incase you have issues.
Click my avatar (profile picture) to see mine

 

[old_monk]

Yes, I have the subscription and just enabled the link. You should be able to see my logs/test results.

 

[old_monk]

You don’t need to keep checking the ch as frequently as the fc ph & ta - its not going to change much unless you do something to change it (add calcium, replace water)

Would it ever happen that CH goes up without adding calcium or new water but pool water pulling it from the new plaster?

 

[PoolGate]

Would it ever happen that CH goes up without adding calcium or new water but pool water pulling it from the new plaster?

What does your CSI show (poolmath)? My calculation of your CSI shows it at near perfect - 0.

 

[ajw22]

Are you testing CH with a 10ML or 25ML sample?