Strange Salt Cell Issue

[Newdude]

TA 100

As you manage the PH, the TA will come down on its own. You can speed up the process by operating in the low 7s, or just wait it out by operating in the high 7s. Once the TA gets to 70 or 60 the PH swing should ease up a bit.

It is also a tricky week as we have just had horrible weather

It's always tricky because any week could have low and high loss at either end, or high low high low high low.

Always dose for the higher loss days of that point in the season and accept it'll overproduce on the others. You can drive yourself mad micromanaging it.

 

[DavidArmenB]

Just for comparison, my SoCal pool/spa is 16500 gallons and my Hayward t-15 cell can produce 1.47 pounds of chlorine gas per 24 hours at 100%, which is a concentration of 11ppm for my pool.

The pool sees intense sunlight all day in the summer, but weak sunlight only for a couple or so hours during the winter.

I start up my SWCG in March. At the same time, I set my CYA to 80ppm, however, this slowly lowers to about 60ppm by December, which is also the month when I shut off my SWCG.

I aim for 10pm FC throughout the year.

In the summer, I lose about 4ppm FC per day and I have my SWCG set to 40-45% for 19 hours. In the winter, however, my pool loses as little as 0.2ppm FC per day. Before I shut it off in December, the SWCG is running at a rate as little as 5%.

 

[diesel1218]

Just for comparison, my SoCal pool/spa is 16500 gallons and my Hayward t-15 cell can produce 1.47 pounds of chlorine gas per 24 hours at 100%, which is a concentration of 11ppm for my pool.

The pool sees intense sunlight all day in the summer, but weak sunlight only for a couple or so hours during the winter.

I start up my SWCG in March. At the same time, I set my CYA to 80ppm, however, this slowly lowers to about 60ppm by December, which is also the month when I shut off my SWCG.

I aim for 10pm FC throughout the year.

In the summer, I lose about 4ppm FC per day and I have my SWCG set to 40-45% for 19 hours. In the winter, however, my pool loses as little as 0.2ppm FC per day. Before I shut it off in December, the SWCG is running at a rate as little as 5%.

Yeah I assume I am somewhere near there I turned it on the first two days it was replaced but it has been off since the . My FC shot over 10 so now just waiting on it to come back down and can probably run it at 10% seems like I am losing very little right now. Only issue with keeping it high is not knowing where the Ph is.

 

[Mdragger88]

Yeah I assume I am somewhere near there I turned it on the first two days it was replaced but it has been off since the . My FC shot over 10 so now just waiting on it to come back down and can probably run it at 10% seems like I am losing very little right now. Only issue with keeping it high is not knowing where the Ph is.

10 ppm is the sweet spot- ph is accurate & you’ve got plenty of wiggle room between you & minimum.

 

[diesel1218]

Still trying to find a sweet spot with my SWG I have it set to 7% right now. My FC went from 6 to 7.5 in two days with it at 10%. My Ph is still high though I brought it down to 7.5 and tested again today over 8.2.

 

[Newdude]

Still trying to find a sweet spot with my SWG

Many days have some variance from the day before it and without much loss this time of year it's easy to overproduce. I'd probably let it slowly climb to 10, then shut it off and let it drift down for a week or however long it took to burn off.

My Ph is still high though I brought it down to 7.5 and tested again today over 8.2.

Aim for 7.8. If you overshoot a little to 7.6 that's fine too but it wants to be high and if you compromise a little with it everybody wins.

 

[diesel1218]

Well I dont know what is up with my setup but my Ph just doesn't stay down. Every day I test it above 8.2 and put acid in to bring it down to 7.6 and next test no change. I have my bubblers off since the mention of that aiding in the rise but that not going to last long come summer time when the kids want to be in the pool.

FC seems fine fluctuating between 6-7.5 based on the SWG settings.

 

[diesel1218]

My results today nothing really has changed at all just the Ph always rising.

FC 7
CC 0
Ph > 8.2
CH 325
TA 70
CYA 40
CSI .19

 

[Bperry]

My results today nothing really has changed at all just the Ph always rising.

FC 7
CC 0
Ph > 8.2
CH 325
TA 70
CYA 40
CSI .19

Keep testing and adding acid every 30 minutes until it tests at 7-something.

 

[diesel1218]

Keep testing and adding acid every 30 minutes until it tests at 7-something.

Okay I just added about 15oz see where I am at in 30.

I have brought it down into the 7 last week and it always shoots back up.

 

[ajw22]

When your pump is running do you see any water movement?

 

[diesel1218]

When your pump is running do you see any water movement?

Yes I have a lot of choppy water even with the bubblers off. I just dont see that changing, only increasing as the summer comes and the kids want the bubblers on. The water movement is basically the pool and spa returns unless the bubblers are on.

 

[ajw22]

Yes I have a lot of choppy water even with the bubblers off. I just dont see that changing, only increasing as the summer comes and the kids want the bubblers on. The water movement is basically the pool and spa returns unless the bubblers are on.

That choppy water is causing aeration which is rising your pH.

Point your returns down to stop the aeration.

 

[diesel1218]

That choppy water is causing aeration which is rising your pH.

Point your returns down to stop the aeration.

SO I pointed the returns down and also turned down the return on the SPA as it is an infinity so the water pushes up and over the sides.

Just tested the Ph and show how now appears to be between 7.2-7.5.

I guess my question here is does everyone with water features just run high Ph all the time? I have neighbors and their pools run fountains and bubblers 24/7.

 

[Newdude]

I guess my question here is does everyone with water features just run high Ph all the time? I have neighbors and their pools run fountains and bubblers 24/7.

You have neighbors that trust the weekly pool service to handle everything. Or they test at the pool store twice a month.

Just saying. They don't know what they don't know.

 

[Bperry]

I guess my question here is does everyone with water features just run high Ph all the time? I have neighbors and their pools run fountains and bubblers 24/7.

Maybe. If they use Trichlor pucks, then that’s adding a constant amount of acid to their pool all day long so it may keep the pH down a little bit.

pH of 7.8 is just fine

 

[ajw22]

Does the spa spillover need to run all the time?

Use SPILLOVER mode on your automation to schedule the spa being refreshed twice a day for 15 minutes.

 

[diesel1218]

Does the spa spillover need to run all the time?

Use SPILLOVER mode on your automation to schedule the spa being refreshed twice a day for 15 minutes.

There isn’t an automatic way to turn the spa return off. Other than closing the valve which I did reduce the flow to the return yesterday and the spill is a lot weaker. The pool looks much flatter so I will test Ph as see.

I saw in another thread people keeps their TA around 60 and maybe only need to add acid once every week. Which would be a big improvement if I can use the water features. I mean we got them for the kids so I hate having them off.

 

[ajw22]

There isn’t an automatic way to turn the spa return off. Other than closing the valve which I did reduce the flow to the return yesterday and the spill is a lot weaker. The pool looks much flatter so I will test Ph as see.

Fully turn off the valve manually and leave it off.

Schedule the spa spillover to run for 20 minutes twice a day to keep the spa fresh.

I saw in another thread people keeps their TA around 60 and maybe only need to add acid once every week. Which would be a big improvement if I can use the water features. I mean we got them for the kids so I hate having them off.

Turn the water features on when the kiddos want to use them and turn them off when they are out of the pool.

 

[diesel1218]

Fully turn off the valve manually and leave it off.

Schedule the spa spillover to run for 20 minutes twice a day to keep the spa fresh.

If I shut off the valve for the return running the spa twice a day I assume the return won’t work. Just the jets.