Ph / Ta relationship

[TexasTomKat]

Ph-7.4
Ta-70
Chl-4
Cya- 50-55
Calcium-240
Test with Taylor kit and reagents .
Trying to bring up Ta without pushing Ph ? Any tricks ? 80-90 TA usually results in 7.6 -7.8 ph on the high side.
Seems they are attached and move in tandem.. driving me nuts . Using liquid acid and liquid chlorine to balance,And Ta increaser powder to raise Ta. Pool builder thinks 70 Ta is fine, he also started my pool with pucks and no calcium hardness checks. Spa spills over and runs off main pump can’t turn off spill over .. water features run occasionally.
Thanks

 

[mknauss]

Trying to bring up Ta without pushing Ph ?

Why? No reason to raise TA.
You might look at adding some calcium.

How are you testing the pool water chemistry?

 

[ajw22]

Ph-7.4
Ta-70
Chl-4
Cya- 50-55
Calcium-240
Test with Taylor kit and reagents .
Trying to bring up Ta without pushing Ph ? Any tricks ?

Trick is TA down to 50 is ok. TA of 70 is fine.

80-90 TA usually results in 7.6 -7.8 ph on the high side.
Seems they are attached and move in tandem.. driving me nuts . Using liquid acid and liquid chlorine to balance,And Ta increaser powder to raise Ta. Pool builder thinks 70 Ta is fine,

On that your PB is correct.

Spa spills over and runs off main pump can’t turn off spill over ..

Have a valve added to turn off spillover and setup your Aqualink with dipsswitch 3 to enable SPILLOVER mode.

Jandy Aqualink RS - Further Reading

www.troublefreepool.com

 

[TexasTomKat]

Why? No reason to raise TA.
You might look at adding some calcium.

How are you testing the pool water chemistry?

Wet edge recommendations- 80 min Ta
Ph 7.6 max .. at 80 Ta ph sits at 7.6-7.8 and slowly goes over during the week.
I like to set up low for the week when I travel . Testing with T-2006

 

[mknauss]

Wet edge recommendations- 80 min Ta

You will drive yourself crazy trying to follow those.

 

[TexasTomKat]

Trick is TA down to 50 is ok. TA of 70 is fine.



On that your PB is correct.



Have a valve added to turn off spillover and setup your Aqualink with dipsswitch 3 to enable SPILLOVER mode.

Jandy Aqualink RS - Further Reading

www.troublefreepool.com

Going by wet edge recommendations 80 Ta min and Ph 7.6 max looking at pebble tec they give a little room on Ta of 70 but ph 7.6 max .. who knows similar products , I have wet edge.

 

[ajw22]

Going by wet edge recommendations 80 Ta min and Ph 7.6 max looking at pebble tec they give a little room on Ta of 70 but ph 7.6 max .. who knows similar products , I have wet edge.

Those differences are arbitrary.

Good luck.

 

[Donldson]

Wet edge recommendations- 80 min Ta

TA has no direct effect on a pool surface. Most likely the recommendation is because of the possibility that the owners would be using trichlor tablets to chlorinate, which are highly acidic and need higher TA to avoid the water going acidic. When using neutral/basic sources of chlorine (liquid or SWG) the TA needs to be lower to maintain a relatively steady pH.

Unless there is a specifically stated warranty requirement to keep TA at that level you're not doing yourself any favors by following it. Follow their pH recommendations and allow the TA to drop to whatever level best accommodates that.

 

[TexasTomKat]

You will drive yourself crazy trying to follow those.

Too late, yeah this pace for me is not sustainable.. I’m going to keep ph stable and let the The Ta settle where it’s at.. I’ll add some calcium since that’s been pretty stable..still learning with this pool . Thanks

 

[TexasTomKat]

Those differences are arbitrary.

Good luck.

Thanks I’m assuming it’s very tight for liability reasons

 

[TexasTomKat]

TA has no direct effect on a pool surface. Most likely the recommendation is because of the possibility that the owners would be using trichlor tablets to chlorinate, which are highly acidic and need higher TA to avoid the water going acidic. When using neutral/basic sources of chlorine (liquid or SWG) the TA needs to be lower to maintain a relatively steady pH.

Unless there is a specifically stated warranty requirement to keep TA at that level you're not doing yourself any favors by following it. Follow their pH recommendations and allow the TA to drop to whatever level best accommodates that.

That’s sound advice, I was heading that direction.. I was thinking those parameters are liability based. Thanks for the input.

 

[reggiehammond]

Test your fill water; you may be picking up CH from topping off in this heat...

 

[TexasTomKat]

Test your fill water; you may be picking up CH from topping off in this heat...

Probably our water isn’t the best .

 

[TexasTomKat]

Good point.